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Material Examination

The hair or cremated ashes are first analysed to determine whether they contain enough carbon to be turned into a diamond. The carbon content of ashes differs from case to case, and the total contained carbon may or may not be enough for LONITÉ’s diamond creation process. It is highly suggested that clients provide additional hair samples from the family as a supplement/backup plan.

(An elemental analyser is used to determine the carbon percentage in hair/cremated ashes)


Milling equipment similar to the movement of planetary systems, involving both rotation and revolution


Planetary Nano-Crystallisation

Impurity remover is applied in a special solvent to remove unstable chemicals. The material (ashes or hair) is then milled and stirred into a nanopowder in a special chemical gas environment. The impurity remover attaches to impurities, which are then isolated from the materials by a high-speed centrifuge. Furthermore, special treatment and techniques are implemented so the remaining carbon is adequately preserved while other elements extracted are reduced to a fractional minimum.


A muffle furnace is injected with a gas mix to protect the ashes or hair from oxidation


Heated Vacuum Purification

The milled, purified material is heated to extreme temperatures to eliminate volatile impurities. At this step, oxygen is removed and inert, protective, and reducing gases are injected to protect the ashes or hair from oxidation. Double handling is applied for chemical extraction. In some cases, high voltages may be applied in an energised airtight container to melt and evaporate chemicals, further purifying the solid carbon.

Chemical specialist enhance purity

Chemical reagents for higher carbon purity


Wet Chemical Carbon Purification

The carbon from hair or ashes is then placed in a safe and resistant cabinet, a wet chemical environment so as to increase purity by removing heavy metals. The program-controlled process of specific temperatures, stirring speeds, and the addition of chemical reagents ensures carbon quality. At the end of this final purification step, the carbon purity reaches as high as 99.99% (4N Purity). If the purity levels have not reached 99.99% by this stage, additional customised purification steps are implemented to remove the specific remaining impurities.



Diamond Polishing

Distinguishing from mined diamonds, raw memorial diamonds often contain a mixture of graphite and other materials, particularly on the surface. Our skilled experts, specialising in grown diamonds, meticulously refine these rough diamonds. We can provide a rough, uncut memorial diamond upon request. However, please exercise caution as attempting to cut it post-delivery may result in breakage, especially with inexperienced diamond cutters. Feel free to contact us if you require re-polishing or if you intend to set it into a cremation diamond ring or memorial pendant.

The Theory:

Re-create Natural environments.

Natural diamonds develop in an environment of extreme high-pressure and high-temperatures (HPHT) deep underground. LONITÉ’s laboratory precisely re-creates this environment of extremely high temperatures (3000K) and pressures (60000Bar) and turns carbon from hair or ashes into diamonds.

18.2 MΩ.cm Ultrapure Water System.

Water is purified using an ultrapure water system to 18.2 MΩ.cm (1,250 times purer than drinking water). All chemical containers are cleaned with ultrapure water to avoid introducing external contaminants to the cremated ashes.

1MW Backup Power Generators.  

A Cremation diamond takes several weeks to grow and a power interruption or voltage instability, even for just a few minutes can have a drastic effect. To avoid such shortcomings, LONITÉ has backup power generators on standby at all times.

Thermostat Temperature Controllers.

LONITÉ uses high-precision thermostat temperature controllers to keep the core temperature of the diamond chamber precisely at 2651.6°C [*]. This ensures that the inside temperature remains constant and unaffected by any external temperature changes.

II. Diamond Crystallisation.

Purely Colourless™ at 0.5-1.0 mg/hour.

The purified carbon is the foundation for cremation diamond crystallisation. Air, along with other atoms such as H₂O (water) and O₂ (Oxygen) are removed to ensure that the carbon is very pure and dense.

A typical Purely Colourless™ diamond grows slowly and steadily at the extremely slow speed of 0.5-1.0 mg/hour. Slow crystallisation results to fewer flaws and better structure in the cremation diamond. 

I. Carbon Purification.

5,000-Minute Purification for 99.99% (4N) Carbon Purity

Purification takes approximately 5,000 minutes, over 83 hours, for each memorial diamond ordered.

Impurities are removed and reduced to 1/500 of the original impurity content, providing 4N purity (99.99%).

Every little detail matters when turning ashes into diamonds. LONITÉ™ uses highly specialised state-of-the-art equipment that allows the greatest precision, quality and stability. Instruments are surgical grade, scales are accurate to 0.001(g).


Technical Know-How

[*]Note: Data is modified to protect technical secrets.

Atoms Tracing on Chemical Density.

memorial diamond from pet/human ashes looks the same, both optically and chemically as a natural diamond.

All LONITÉ memorial diamonds are delivered with both a certification of origin and a process analysis report, documenting and proving scientifically that a LONITÉ diamond originates from the ashes of the client’s loved one.

Certificate of Origin with Analysis Report.

The production records, laboratory data, chemical analysis and physical factors of LONITÉ memorial diamonds can be re-verified and validated by any independent certification and quality control institute.

Verified by Independent Research Institutes.

However, experts at LONITÉ™ can scientifically and technically differentiate genuine cremation diamonds because of slight differences in the carbon atoms and chemical density.

Scientifically Proven.

Fluorescence and luminescence tracing are commonly used in the diamond analysis under special environments such as short wave ultra-violet light. The LONITÉ laboratory uses even more extensive and advanced examination tools.

LONITÉ cremation diamond origin analysis on hair and cremated bones img


From Ashes to Cremation Diamonds: LONITÉ™ Laboratory and Process

Life Element: Carbon.

Turning cremation ashes into diamonds is possible because Carbon [C] accounts for 18% of the human body and diamonds are crystallised carbon. Cremation diamonds are genuine diamonds grown by using the carbon contained within hair or cremation ashes.

Nitrogen [N] accounts for 3% of the human body, which gives a cremation diamond a Naturally Amber™ colour, varying from light yellow to deep orange.

Purely Colourless™ diamonds are created by removing nitrogen [N] from the carbon [C] prior to making a cremation diamond from the ashes.


(High-Pressure High-Temperature (HPHT) presses transform purified carbon atoms from hair/ashes into genuine diamonds)

The purified, extracted carbon is converted into flake graphite in the form of a cylinder. Before being placed into the diamond synthesis machine, the cylinder is carefully wrapped in protective and corbelled materials. This prepares it for the final technical steps that require pressure and temperature measurement, insulation, and protection. The transformation takes several days to several months depending on the size and colour of the memorial diamond to be created.


HPHT Crystallisation

The Transparent LONITÉ™ Production Process

The origin of the carbon in your memorial diamond can be scientifically proven. As of today, LONITÉ™’s eminent technical team can provide this exceptional technological breakthrough in creating genuine memorial diamonds at a reasonable cost.

Transform Ashes and Hair of Your Loved Ones

LONITE AG's Facility in Horgen, Switzerland

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