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LONITÉ Lab
in Horgen, Zurich
Swiss Lab Team
Set in Horgen, just south of Zürich, the LONITÉ laboratory embodies the finest standards of Swiss excellence in every memorial diamond it brings to life. Within its walls, a close-knit team understands that each portion of ashes, each lock of hair, carries far more than carbon. It carries a loved one's legacy. Every diamond moves through a scrupulous chain of custody, placed under the personal stewardship of the team, with transparency honored at each stage. Such devotion mirrors the principles at the heart of LONITÉ's craft: integrity, precision, and compassion. Here, world-leading science serves a purpose that is profoundly sacred.
Where Memory Becomes a Diamond
Inside LONITÉ’s laboratory, advanced science and meticulous craftsmanship guide every stage of a memorial diamond’s creation. From the careful refinement of carbon to diamond growth under precisely controlled conditions, each step is carried out with transparency, integrity, and profound respect for the story entrusted to LONITÉ. The result is an enduring tribute, shaped by Swiss standards and created to preserve a bond beyond time.
Horgen Lab Team Member
Patrik Spirig
Head of Operations & Lab Activities
Patrik oversees the full lifecycle of every diamond born at LONITÉ, guiding each stone from start to finish with scientific rigor and composed leadership. Outside the laboratory, Patrik is a devoted dog dad and pet lover, which deepens his understanding of the bond people share with those dearest to them, fostering a working culture grounded in humanity, respect, and empathy. When families choose LONITÉ to honor a loved one, they find in Patrik a trusted expert whose professionalism is matched by a genuine appreciation for the memory each diamond preserves.
Markus Hahn
Lab Technician
Markus undertakes one of LONITÉ's most delicate responsibilities. He is the first member of the laboratory team to touch the material provided by each client, preparing each sample for the scientific stages that follow. For Markus, this is never a procedural task. What passes through his hands is a tangible connection to someone cherished, so every action is deliberate, documented, and performed with respect. His calm and meticulous handling upholds the standard of care that accompanies every memorial diamond throughout its transformation.
Liburn Zhitija
Logistics & Swiss Customer Service
A vital stage of the LONITÉ service falls under Liburn's attentive watch. He ensures the secure passage of each client's material to the laboratory, arranges the return of the completed diamond, and acts as the direct point of contact for Swiss customers. Entrusting something so meaningful to a logistical process requires confidence. Liburn earns it through clear communication and conscientious organization, keeping the entire experience smooth and unhurried. Approachable and supportive by nature, Liburn gives families a reassuring presence throughout this part of the journey.
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 colors. 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 a custom jewelry that elegantly showcases your distinctive cremation diamond, allowing you to keep their memory close at all times.
Lonité Showroom
The LONITÉ showroom offers a welcoming and private setting in which to discover the artistry behind memorial diamonds. Visitors are invited to view a curated selection of diamond and jewelry samples in person, while the LONITÉ team provides thoughtful guidance and answers any questions with care and transparency.
Our Lakeside Campus
Located at Bachtobelstrasse 5 in the picturesque lakeside town of Horgen, the LONITÉ Swiss laboratory and office are approximately 25 minutes by train from Zürich Hauptbahnhof.
Where Swiss Precision Meets Serenity
Overlooking Lake Zurich, the campus is surrounded by green meadows, hillside farms and peaceful views of swans on the water and snow-capped mountains in the distance.
Visitors may also take the ferry across the lake to Meilen, enjoy a scenic lake cruise or explore the nearby countryside, where horses and grazing cattle are a familiar sight.
LONITÉ warmly welcomes guests to experience this serene Swiss setting and discover the people, precision and care behind every memorial diamond.
Swiss Laboratory & Office
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.
Visit Our Lab
in Zurich, Switzerland
Join us for an exclusive journey to witness the future of diamond creation, where science and beauty intertwine seamlessly.
LONITÉ Memorial Diamonds - A Heartfelt Healing Journey
In times of loss, finding a path toward healing can be deeply personal. Our clients from around the world share how creating a memorial diamond from a loved one’s ashes became a comforting and meaningful way to honor their memory. This lasting tribute is not only a beautiful gemstone but also a profound reminder of enduring love. Join us in this journey of transformation, where remembrance turns into a cherished keepsake.
Carrying On Their Presence Beyond Their Absence
FAQs
The Answers You Need
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 select offices, including New York City, Buffalo (NY), and Madrid.
Families can reach LONITÉ's specialist teams through the dedicated channels listed for their region, including Switzerland (CH), Germany (DE), Spain (ES), 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.
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-centric approach build a level of trust that sets the company apart in the industry.
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.
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.
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.
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 localized, personal support, LONITÉ also maintains offices and representatives in the United States (New York City and Buffalo), the United Kingdom, Germany, Spain, Australia, Japan, Taiwan, 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.
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 jewelry 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.
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. LONITÉ serves families worldwide, coordinated through the company’s international headquarters in Horgen, Canton of Zurich, Switzerland. To provide a personalized 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. You do not need to choose your jewelry setting when placing your initial diamond order. You have several months during the creation process to select your preferred piece of jewelry, which will then be applied to your second and final invoice.
It reflects the additional time and material required. To achieve certain intricate cuts, we must grow a larger rough diamond, which demands extra time, precision, and technical effort during both synthesis and cutting. The surcharge simply accounts for these extra resources and specialized craftsmanship.
Our standard memorial diamonds range from 0.25 carats up to 3.00 carats. If you are interested in a diamond larger than 3 carats, please submit a special inquiry, and our team will be glad to assist you. For more details on available carats, cuts, colours, and customisation options, please consult our diamond page.
Our Horgen Lab is our primary facility where you can tour the lab, meet the team caring for your loved one’s ashes, and see the technology behind the transformation process firsthand.
Our Zurich office serves as a convenient alternative location for clients who prefer a central meeting point, have limited time, or need a quick consultation.
You guys can already add those 4 new questions. I still participate in client meetings and these are often asked questions by our clients. I will get back to you with more later.
Absolutely. If you prefer not to weigh the ashes yourself, our team is happy to assist. Simply bring or send them to your local customer care office or our Horgen Lab in Switzerland, and our staff will handle the measurement gently and respectfully on your behalf.
No, only a portion is required.The process typically uses between 150g and 200g of ashes. When additional ashes are received, we retain a reserve as a safety protocol. Any remaining ashes can be safely returned to you or reserved for a scattering ceremony.
