Company Story
About LONITÉ AG
Swiss Origin
Our Story
LONITÉ’s story began in a small town near the Alps, 25-minute train ride south of Zürich, Switzerland, where the company's founders started to ask if you can turn ashes into diamonds.
The company name ‘LONITÉ’ originates from ‘Longévité’ in Swiss French, translating to last in time. Diamonds after death are one aspect of this idea.
LONITÉ is a trademark of our Swiss company LONITÉ AG. LONITÉ AG with its laboratories and scientists is a world leader in cremation diamond technology.
Swiss Origin
History
What Sets Us Apart
The roots of LONITÉ AG's technological journey trace back to the early 1950s, an era when visionary scientists uncovered the art of transforming carbon into diamonds using High-Pressure High-Temperature anvils.
At the heart of LONITÉ, our founders emerge as trailblasers in a range of fields essential for crafting memorial diamonds and delivering impeccable services. Drawing from extensive backgrounds in jewellery craftsmanship, the funeral industry, scientific exploration, and diamond artistry, they unite their diverse expertise. Together, they possess the ideal blend of skills necessary to create exquisite cremation diamonds from ashes, offering solace to families in their times of need.
Research & Development
In the beginning, only modest amber and blue diamonds could be fashioned. However, with years of research and experimentation, progress in the realm of high-pressure science has transformed this landscape. Today, LONITÉ offers cremation diamonds from ashes in larger sizes and various beautiful colours. These memorial diamonds can capture the essence of your loved one's character and allure, perpetuating their presence in your life even after passing. At your behest, LONITÉ can craft custom jewellery that elegantly showcases your distinctive cremation diamond, allowing you to keep their memory close at all times.
LONITÉ Swiss Laboratory and Office Tour
LONITÉ offers its clients the unique opportunity to collect their final order of lab-grown diamonds directly from our global headquarters, in Horgen, Switzerland. By appointment only, clients can immerse themselves in our state-of-the-art lab facilities, gaining insights into our cutting-edge technology and meeting the passionate team behind LONITÉ. Join us for an exclusive journey to witness the future of diamond creation, where science and beauty intertwine seamlessly.
Official Member
Lonite AG is an official member of the Swiss Association of Funeral Services (SVB).
The SVB is a professional organisation for the funeral industry in Switzerland that is recognised by the Federal Council (SBFI, State Secretariat for Education, Research and Innovation).
The SVB is committed to providing fair, reputable and honest professional advice and support to bereaved families.
Official Member
LONITÉ AG is an official member of the The World Organisation of Funeral Operatives.
Fédération Internationale des Associations de Thanatologues (FIAT) - International Federation of Thanatologists Associations (IFTA)
The FIAT-IFTA is the only internationally governed funeral Federation with National, Active And Associate Members in more than 80 countries.
Official Member
JLGDA (Japan Laboratory Grown Diamond Association) is a non-profit organisation that supports the healthy development of the laboratory grown diamond industry.
By promoting communication and education in the Japanese market, sharing information between companies and unifying trading standards, we aim to expand the market while protecting consumer trust.
LONITÉ's Global Team
Lauren Dufflar
LONITÉ Switzerland
"For me, it is truly an honor to support people in such a meaningful moment of their lives. The ability to transform memories into something as precious and lasting as a diamond fills me with pride. My goal is to make this process as personal, compassionate, and transparent as possible. I want every customer to feel supported every step of the way—because memories are the most valuable treasures we have."
Tracy Tout
LONITÉ USA
“I lost my father and that is what makes me happy that I can be there to help someone that is grieving. I hope that it makes them feel better to be able to create an amazing diamond of their loved ones to always keep close.”
Melissa Legarda
LONITÉ USA
"When it came to choosing a career, I knew I wanted to work for a place that embodied empathy and helped people turn difficult situations into something positive. Then I stumbled upon Lonite and all those elements came together. I feel happy knowing I can be there for someone in their darkest hours and help them create something that will bring them and their family comfort."
Christel Groenewald
LONITÉ UK
“I am passionate to help people in need and am touched deeply by stories of their loved ones. A memorial diamond is such a meaningful and beautiful way to honour our loved ones.”
Payton S.
LONITÉ Australia
“I really love what I do at Lonite. It is so fulfilling being part of people's process of turning grief into a beautiful, physical memory of a loved one. I pride myself on making meaningful connections with our customers, and nothing feels more rewarding than seeing the reactions when handing over our gorgeous finished diamonds.”
Liburn Zhitija
LONITÉ Switzerland
“Every story behind a memorial diamond is unique. It brings me great joy to be part of this special process and to help people create a beautiful and lasting keepsake. For as long as I can remember, I’ve been a very helpful person, and I do my best to support others and bring a smile to their faces.”
Malte Himmelreich
LONITÉ Germany
“Every person has a unique story. A diamond made from ashes helps to symbolize this in a special way. I know that I am helping to create something that is one of a kind. My goal is to convey this uniqueness and provide emotional support to the bereaved. In this way, a life story is transformed into a high-quality physical memento. This is exactly what makes this work so special and fulfilling for me.”
Kyoko M
LONITÉ Japan
“I will wholeheartedly assist you in turning the cherished memories with your loved ones, whom you will forever cherish and never forget, into reality. Please feel free to consult with us about any small matter. We will spare no effort to shape your precious memories into tangible forms.”
Yukai Su
LONITÉ Taiwan
"Customers entrust the most important carbon source materials. LONITÉ's service team has the responsibility to safely check, confirm that every step is correct, and then safely deliver the commemorative diamond to the customer. This is my mission. Thank you for your trust."
Salome
LONITÉ Hong Kong
"Losing someone you love is a difficult experience to go through in a lifetime. For this reason, I am glad I can accompany our clients and help them walk through this difficult stage. Creating a memorial diamond of their loved ones is a very heartwarming and meaningful way to keep all of their sweetest memories alive."
Peiwen Zhang
LONITÉ China
"I believe LONITÉ diamond can act as a memory for someone you have forever loved and will never forget. My goal is to help people in finding another way to honour and remember their loved one."
Guidance with Care
From the dedicated submission kit to the delivery of the final product, LONITÉ takes care of everything for customers and is committed to providing guidance and support with care and compassion.
Dedicated Customer Service
LONITÉ provides dedicated customer service to ensure that each client receives one-on-one attention and tailored support, making the creation of a cremation diamond a meaningful and stress-free experience for every client.
Personalised Experience
Creating a cremation diamond is a deeply personal and meaningful process. LONITÉ takes pride in offering a truly personalised experience tailored to meet each client's individual requirements and honours the memories of those who have passed.
Identification specifics are marked on tracking tags throughout the process.
Integrity.
Improved New Standards
LONITÉ’s improved Standard Operating Procedures (SOP LNT OT95000) were introduced to provide the highest level of control and monitoring. Our internal documentation and management systems keep track of each individual order are improved and refined to create the greatest possible reliability when growing diamonds from cremated remains.
Correctness.
25 Checks at 7 Inspection points
Human hair/ashes or pet fur/ashes are marked with a unique tracking ID and bar code upon arrival. There are seven vital inspection points along the diamond growing process, with a total of 25 checks performed by our trained staff in the different departments. Staff IDs and access dates are logged at every step of the way. All processes are traced. Photos are taken so that you can personally see the care and attention to detail we use in converting your loved ones’ remains into a beautiful cremation diamond you can treasure forever.
Accuracy.
Medical-grade, Accurate to 0.001(g)
At the start of the process, the hair or cremation ashes of your loved one are carefully and respectfully cleaned with medical-grade sterilisation alcohol. The precisely measured amounts of chemical purification agents and catalysts are accurate to three decimal places (0.001g). The Standard Operating Procedures (SOPs) are necessary to increase the cremation diamond’s colour, purity, stability and quality.
Tracking ID, name and bar code are attached to containers throughout the process of making diamonds out of ashes. At each transfer or relocation, the information is double checked by staff from both the sending and the receiving departments.
Visit Our German Office（Berlin, Germany）
Experience a one-on-one consultation in a refined setting, designed to bring your vision to life.
Visit Our Swiss Office（Zürich, Switzerland）
Experience a one-on-one consultation in a refined setting, designed to bring your vision to life.
Meet with Us
Our Philosophy
Beyond Diamonds: Our focus isn't just on trading diamonds, but on offering priceless keepsakes.
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Eternal Bonds: Our cremation diamonds and jewellery serve as a cherished link, keeping loved ones forever near.
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Compassion in Action: Fueled by heartwarming stories, our team is committed to extending solace to families during their times of need.
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FAQs
About LONITÉ
The name LONITÉ comes from "Longévité" in Swiss French, meaning "lasting in time." It reflects the company's founding idea that a memorial diamond preserves the memory of a loved one in a form as enduring as the bond itself. The name was chosen to connect the permanence of a diamond with the lasting significance of the person it represents.
LONITÉ is a laboratory-based company. The entire diamond creation process takes place at the company's own facility in Horgen, Switzerland.
Because LONITÉ controls every stage directly, from carbon extraction to final polishing, the company can guarantee several things that would otherwise be difficult to verify:
Carbon authenticity. Every memorial diamond is grown exclusively from carbon extracted from the ashes or hair provided by the family. No industrial carbon fillers are introduced at any point.
4N purity standard. The carbon purification process achieves 99.99% purity (known in material science as "4N"), which directly influences the clarity and structural integrity of the finished diamond.
Natural diamond seeds. LONITÉ uses only seeds sourced from the top 0.1% of natural diamonds, rather than synthetic CVD seeds. This choice affects the crystal lattice formation and contributes to the optical quality of the final stone.
No intermediary pricing. Families receive laboratory direct pricing without reseller markups.
The technological foundation behind LONITÉ's process traces back to high-pressure, high-temperature (HPHT) diamond synthesis research from the early 1950s. The company's founders brought decades of experience in high-pressure physics and carbon science to the memorial diamond field, combining that scientific depth with the sensitivity this work requires.
The LONITÉ approach is guided by three core values:
Compassion
LONITÉ recognizes that each order represents a deeply personal moment in a family's life. The LONITÉ memorial diamond is not simply a product. It is a physical connection to someone irreplaceable. Every interaction, from the first consultation to the final delivery, is guided by this understanding. Each family is assigned a dedicated representative who remains their single point of contact throughout the entire process.
Integrity
Every memorial diamond crafted at the LONITÉ laboratory is documented, tracked, and verifiable. The company guarantees that 100% of the carbon used comes from the ashes or hair entrusted by the family. No shortcuts are taken, no industrial materials are substituted, and no claims are made that cannot be independently confirmed. Active memberships in the Swiss Association of Funeral Services (SVB), the International Federation of Thanatologists Associations (FIAT/IFTA), and the Japan Laboratory Grown Diamond Association (JLGDA) hold the company to externally enforced ethical and industry standards.
Precision
As a Swiss company, LONITÉ applies the same standard of exactness that defines Swiss engineering and craftsmanship. Measurements are taken with medical-grade instruments accurate to 0.001 grams. Every order passes through a 25-step quality control process across 7 inspection points. The company's internal Standard Operating Procedures (SOP LNT OT95000) govern each stage to ensure consistency, accuracy, and full traceability.
LONITÉ is registered as LONITÉ AG under Swiss commercial law, with its global headquarters and primary laboratory in Horgen, a town on the western shore of Lake Zürich in the Canton of Zurich, Switzerland.
Every core technical process takes place at this facility: carbon extraction and analysis, purification, HPHT diamond synthesis, cutting, polishing, and final inspection.
The decision to base all operations in Switzerland was deliberate. Swiss regulatory standards for business transparency, consumer protection, and data privacy (governed by the Swiss Federal Act on Data Protection) offer families an additional layer of assurance that both their personal information and entrusted materials are handled with the utmost care.
To provide localised, personal support, LONITÉ also maintains offices and representatives in the United States (New York City and Buffalo), the United Kingdom (London), Germany (Berlin), Spain (Madrid), Australia (Sydney), Japan (Tokyo), Taiwan (Taipei), and Hong Kong.
LONITÉ is a laboratory-based company, not a reseller. Every technical step, from the arrival of ashes or hair through to the release of a finished diamond, is performed by the company's own team at its own facility in Horgen.
This matters for one essential reason: chain of custody. When the entire process occurs in one location, every transition is internally documented and verifiable. A reseller model introduces outside handling, which creates gaps in traceability that are difficult for a family to confirm independently.
At LONITÉ, each order is assigned a unique tracking ID upon arrival. That identifier follows the order through every stage, and families receive photographic documentation at key inspection points. For those who prefer the most direct form of verification, laboratory tours are available by appointment.
While LONITÉ was formally established a decade ago to bring memorial diamonds directly to families, its foundation is built upon a legacy of innovation.
The founding team's knowledge dates back to the pioneering era of HPHT diamond synthesis in the early 1950s, representing over 70 years of accumulated research in high-pressure physics, carbon materials science, and precision crystal growth.
That scientific heritage continues to evolve. Capabilities that began with Naturally Amber™ and blue diamonds have expanded through sustained research and development to include red, greenish yellow, black, pink, and the technically demanding Purely Colourless™ memorial diamond.
The founders and collective team at LONITÉ unite a rare convergence of mastery across four pillars:
Advanced carbon science. The foundation of every memorial diamond is HPHT synthesis, requiring precise control of pressures above 60,000 bar and temperatures exceeding 3000K to replicate the conditions under which diamonds form deep within the Earth's mantle.
Precision diamond lapidary. Each memorial diamond has characteristics shaped by its unique carbon source. LONITÉ's cutters and polishers are artisans who work exclusively with grown diamonds and understand the particular demands of these stones.
Fine jewellery craftsmanship. Families who choose to set their diamond in a ring, pendant, or other piece receive design and setting work held to the standards expected of Swiss artisanship.
Bereavement care. Technical excellence alone is not enough in this field. LONITÉ staff are trained in compassionate communication and approach every interaction with an understanding of the emotional weight behind each order.
This multidisciplinary synergy ensures that while LONITÉ commands the formidable physics of diamond synthesis, it remains profoundly attuned to the sacred nature of its mission: delivering a tribute that is as scientifically flawless as it is deeply compassionate.
The LONITÉ team consists of highly qualified professionals with backgrounds in high-pressure physics, chemistry, and gemology. Diamond cutters and polishers hold specialized training in working with grown diamonds, which present different cutting challenges than mined stones.
At the organisational level, three professional memberships reflect the company's commitment to external accountability:
All three memberships demand continued compliance, not simply initial registration. Completed diamonds can also be independently graded by the International Gemological Institute (IGI).
The diamond creation process is managed by a team of specialists at the LONITÉ laboratory in Horgen, Switzerland. From the initial carbon analysis to the final quality inspection, each stage of production is led by professionals with direct expertise in that phase.
No single stage passes to the next without sign-off from the responsible specialist. The entire workflow is governed by the company’s Standard Operating Procedures (SOP LNT OT95000), which define protocols for every transition, measurement, and quality check. Staff IDs and access timestamps are logged at each handover point, creating a fully documented chain of responsibility from the moment ashes or hair arrive to the release of the finished diamond.
The LONITÉ process is built upon decades of research in high-pressure physics and carbon materials science, with roots tracing back to the foundational HPHT diamond synthesis experiments of the early 1950s. Three technical pillars define the company's approach:
4N carbon purification: A process that reduces impurities to 1/500th of their original content, achieving 99.99% purity. This is verified through elemental analysis and can be independently confirmed by third-party laboratories.
Natural diamond seeding: LONITÉ uses seeds sourced exclusively from the top 0.1% of natural gem-quality diamonds, rather than synthetic CVD seeds. A high-quality natural seed provides a more stable template for crystal growth, which directly influences the optical quality of the finished stone.
HPHT synthesis parameters: The process operates at pressures exceeding 60,000 bar and temperatures around 3,000K, producing Type IIb diamonds. This classification applies to only about 0.1% of all naturally mined diamonds, making LONITÉ memorial diamonds scientifically comparable to some of the rarest gems on Earth.
Yes. R&D is a continuous priority at LONITÉ. Early production was limited to Naturally Amber™ and blue memorial diamonds. Through sustained investment in materials science and process refinement, the company has since introduced red, greenish yellow, black, pink, and the technically demanding Purely Colourless™ memorial diamond.
Creating a Purely Colourless™ diamond requires the near-total removal of nitrogen from the carbon source before crystallization can begin. This additional purification step is one of the most complex procedures in laboratory diamond synthesis, and the ability to offer it reflects the depth of the company's ongoing research programme.
LONITÉ applies a structured quality control system that includes 25 individual checks distributed across 7 inspection points during the diamond creation process. Every order is assigned a unique tracking ID upon arrival, and that identifier follows the materials through every stage of production.
The company uses surgical-grade instruments with an accuracy of 0.001 grams for all measurements. Chemical purification agents and catalysts are measured in three decimal places. The entire workflow is governed by Standard Operating Procedures (SOP LNT OT95000), which specify exact protocols for each stage to ensure consistency, integrity, and accuracy.
At every transfer between departments, both the sending and receiving teams verify the tracking information attached to the materials. Staff IDs and access dates are logged at each checkpoint, creating a fully documented chain of custody for every order.
LONITÉ guarantees that every memorial diamond is created using 100% of the carbon extracted from the ashes or hair entrusted by the family. No industrial carbon fillers or substitute materials are introduced at any point. This commitment is documented in the Certificate of Authenticity that accompanies each completed diamond, and every diamond carries a lifetime authenticity guarantee.
The company's ethical standards are reinforced by active memberships in three professional organisations:
The Swiss Association of Funeral Services (SVB). Recognized by the Swiss Federal Council through SBFI (State Secretariat for Education, Research and Innovation), which requires members to provide fair, reputable, and honest professional support to bereaved families.
The International Federation of Thanatologists Associations (FIAT/IFTA). The only internationally governed funeral federation, with national and active members in more than 80 countries.
The Japan Laboratory Grown Diamond Association (JLGDA). Non-profit that promotes ethical trading standards and consumer trust in the laboratory-grown diamond industry.
All three memberships require continued compliance, not simply initial registration, meaning the company's practices are subject to ongoing external oversight.
Transparency is a defining feature of the LONITÉ service. Each order receives a unique tracking ID that allows families to follow the progress of their diamond from arrival at the Swiss laboratory through to final delivery. High-resolution imagery is captured at key technical inspection points during the creation process and shared through the client's dedicated representative.
For families who want the most direct form of assurance, LONITÉ offers laboratory tours by appointment at the company's headquarters in Horgen, Switzerland. During a visit, families can see the technology in operation, meet the team, and, if timing allows, collect their finished diamond in person. The company also publishes a downloadable booklet on its website detailing the creation process, available options, and pricing.
Yes. Upon arrival, every order is assigned a unique tracking ID and barcode, which acts as a digital fingerprint throughout the 25-step journey. This ID logs every movement through the laboratory and allows the client's dedicated representative to provide updates at each stage.
To ensure full traceability, clients can view high-resolution imagery captured at key technical inspection points, offering a window into the transformation of the diamond at each critical stage.
Yes. Completed memorial diamonds can be independently graded and certified by the International Gemological Institute (IGI), one of the most respected gemological authorities in the world. An IGI report verifies the diamond's 4Cs (carat, cut, colour, clarity) and confirms it possesses the same properties as a mined diamond.
At the organisational level, the company's professional memberships with SVB, FIAT/IFTA, and JLGDA provide ongoing third-party validation of its ethical standards and business practices. The 4N (99.99%) carbon purity standard and the analysis report included with each Certificate of Authenticity are also designed to be independently confirmable by any quality control institute.
Yes. LONITÉ supports families worldwide, coordinated through the company’s international headquarters in Horgen, Canton of Zurich, Switzerland. To provide a personalised and local experience, the company maintains a network of offices and representatives in the United States (New York City and Buffalo), the United Kingdom (London), Germany (Berlin), Spain (Madrid), Australia (Sydney), Japan (Tokyo), Taiwan (Taipei), and Hong Kong.
This global infrastructure allows LONITÉ to combine Swiss precision with compassionate, local support. Each family is connected with a representative in their region who provides guidance in their language and time zone throughout the entire process.
Yes. LONITÉ welcomes families to visit the company's global headquarters and laboratory in Horgen, Switzerland, by appointment. A laboratory tour offers the opportunity to see the company's technology in operation, meet the team responsible for the work, and gain a firsthand understanding of how memorial diamonds are created.
Families who time their visit to coincide with the completion of their order also have the option to collect their finished memorial diamond in person. Tours can be booked through the LONITÉ website or by contacting the customer service team directly. In-person consultations are also available at our Horgen Lab.
Families can reach LONITÉ's specialist teams through the dedicated channels listed for their region, including Switzerland (CH), Germany (DE), Spain (ES), France (FR), Italy (IT), the United States (US), the United Kingdom (UK), Australia (AU), Japan (JP), Hong Kong (HK), and Taiwan (TW). Several ways to connect are available: direct telephone support, secure email, or a scheduled virtual consultation. For a more personal experience, in-person meetings can be arranged at regional offices or at the global headquarters in Horgen.
From the first inquiry, a dedicated representative is assigned to each family, ensuring one-on-one guidance and compassionate support through every step of the memorial diamond process.
Yes. LONITÉ has been entrusted by thousands of families worldwide, and many have chosen to share their experiences publicly. Client testimonials appear on the company's website and social media channels, featuring families from across the United States, the United Kingdom, Germany, Australia, Japan, Taiwan, Hong Kong, France, and other regions. Each story is shared with the family's permission and offers a personal perspective on the memorial diamond journey.
The company's website also features team member profiles, where LONITÉ representatives from each region share their personal motivations for working in this field. This gives prospective clients a sense of who they will be working with before making contact.
LONITÉ is headquartered in Switzerland and operates under the Swiss Federal Act on Data Protection (FADP). All personal information and order details are stored and processed in accordance with Swiss law, which provides families with an additional layer of assurance that their data is handled with care. Within the laboratory, materials are tracked by unique ID and barcode throughout the production process.
Yes. The LONITÉ website features galleries of completed memorial diamonds across all available colours (Purely Colourless™, blue, Naturally Amber™, red, greenish yellow, black, and pink), cuts, and carat sizes. Many of these images show the diamonds set in the company's jewellery collection, including rings, pendants, and earrings, providing a realistic view of how the finished piece looks when worn. These images represent real completed orders.
Additional photos, process videos, and client stories are published on the company's Instagram, YouTube, and Facebook channels.
LONITÉ stays ahead through an unwavering focus on technology, transparency, and trust. Its ongoing R&D keeps the company at the forefront of diamond synthesis science. The direct-to-consumer, laboratory-based model ensures quality control that resellers cannot match. Finally, its Swiss heritage of precision and a compassionate, client-centred approach build a level of trust that sets the company apart in the industry.
“Lonité, the premier cremation diamond producer”
— International Business Times
“It’s the stories of Lonité's customers that moved me most”
— Huffington Post
“Lonité, a company specialises in turning the dead into diamonds”
— BuzzFeed
“LONITE AG is the pioneer in this (memorial diamond) technology”
— The Christian Post
“A Lonité memorial diamond makes it easy to keep the memory of a loved one”
— Australian Anthill
“Lonité, a Swiss company that specializes in memorial diamond technology”
— WorldNews Network
“LONITE AG, a world leader in memorial diamond technology”
— Tech in Asia
“The Lonité memorial diamond is a warm tribute to your precious loved one”
— Ground Report
“Each diamond comes out unique”
— Bored Panda
LONITÉ Memorial Diamonds
Trusted Worldwide
Chris Plumridge from Australia
Thank you so much for taking the best care of him - he looks amazing and would be very happy knowing Love your work - thank you!
Linda Higgins from New Hampshire
Upon receiving the ring, I was totally impressed with the presentation, the documentation, and the quality. I would highly recommend LONITÉ.
Herr Kuchenbecker from Germany
From the beginning to the end of the contract, It was in good hands. If you want something special, you're in good hands there.
LinYan from Taiwan
Since we were able to check on the order progress in Switzerland on the website at any time, all we needed to do is wait with patience.
A. Y. from Japan
I asked LONITÉ to do this for my dog who had been with me for 13.5 years. It looks lovely and reminds us of the time before her death.
Gyula Racsko from France
We can always get news from our customer service assistant. The process is long but it is clearly specified when ordering.
Rita Solymosi from Hungary
I lost my beloved dog but thanks to LONITÉ AG now she has come back to me in diamonds.
I highly recommend this company. Thank you!
Holly Burraway
from the United Kingdom
I cannot recommend LONITÉ enough. The customer service I received is warm and reassuring and the results are breathtaking.
Judith Mutton from Abu Dhabi
If having your loved one close to you at all times is important, LONITÉ will help. Thank you for providing me.
