4N Purity.

Memorial Diamond.

LONITÉ memorial diamonds are made from human hair and cremation ashes of the deceased.

  1.   99.99% pure (the 4N purity). Solely from elements of life.
  2.   No heavy metals; No artificial colourings; No unstable chemicals.
  3.   Natural diamonds used, instead of CVDs (0.01%, the essential seed crystal).

purity of carbon

diamond seed

Memorial Diamonds from Ashes and Hair

Human body contains 18% carbon. Diamonds are pure carbon. LONITÉ memorial diamonds are made of carbon from hair, cremated bones, or cremation ashes.

6 months on average
Ashes amount
200g ashes/10g Hair
2,500 (0.25 carat) - 2,500 (1.0 carat)
Payment terms
50% + 50%

Memorial diamonds are GIA certified to be genuine diamonds.

The only difference between natural diamonds and LONITÉ memorial diamonds is their origin: carbon atoms of memorial diamonds are from cremated human ashes and remains instead of minerals underground.

On this page:

( Jump to sections by clicking below links )

  1. Uniqueness
  2. Carat Sizes
  3. Shape and Cuts
  4. Memorial Diamond Colours
  5. Authentic Certification
  6. Services
  7. 7 × Features
  8. Compare What it is

Other pages:

( Go to another page by clicking below links )

  1. Memorial Diamond Price List
  2. Order Procedures
  3. Ashes Submission Guide
    (the Required Ashes Amount)

The origin colour of LONITÉ cremation diamond from ashes is amber yellow

From light yellow (left) to deep orange (right), each memorial diamond has a natural colour. No two are alike.

Naturally Grown Memorial Diamonds.

Truly Unique.

After the hair and cremation ashes are purified, the synthesis environment gives them an independent environment to grow.

No two diamonds are alike. The final shape, size and colour depends on its origin.

Each memorial diamond is naturally grown and truly unique. The synthesis environment only gives a range. Exact dimensions can neither be controlled nor predicted.

Memorial Diamonds Options


Diamonds are measured in carat (ct), a unit of mass.

One carat equals to 0.2 g (200 mg; 0.007055 oz).

Size demo

(3.8 mm)
(4.2 mm)
(4.8 mm)
(5.0 mm)
(6.0 mm)
(6.6 mm)

[*] The size demos may be different from actual dimensions due to different screen resolutions.
The size of memorial diamonds is affected by the given growing time.

LONITÉ - LONITE AG, EspañaThe origin colour of LONITÉ cremation diamond from ashes is amber yellow

Rough memorial diamonds are not polished to maintain the entire origin.

Memorial Diamonds Options

Cut Styles

Before Polish

Rough memorial diamonds (uncut / unpolished) are available with a 25% discount for sizes of 0.35 carat or above.

A rough memorial diamond is a unique choice for those of you who want complete naturalness and an ‘entire’ diamond. Nevertheless, only cut diamonds have ‘brilliance’; colour of uncut diamonds may appear darker.

5 × Cuts

Five different cuts are available.

Their brilliance: Brilliant > Princess > Radiant > Asscher > Emerald.

The Brilliant Cut is our most popular cut style for memorial diamonds.

brilliant cut display of LONITÉ memorial diamond from hair or cremation ashes
emerald cut display of LONITÉ memorial diamond from hair or cremation ashes
radiant cut display of LONITÉ memorial diamond from hair or cremation ashes
asscher cut display of LONITÉ memorial diamond from hair or cremation ashes
princess cut display of LONITÉ memorial diamond from hair or cremation ashes

Undecided - to Keep a Maximum

On the order form, you may leave the cut option blank. The cut of your memorial diamonds will be decided by our expert according to its final shape.

You don’t choose the shape, the diamond does.

Each memorial diamond grows uniquely. No two diamond shapes are alike. The shape your memorial diamonds is cut to will depend on its original form, so that its size could be kept to a maximum.

Memorial Diamonds Options

Colour Styles

5 × Colours

Natural diamonds are born with an array of colours, due to the diverse underground environments.

Similarly, below 5 colours are achieved in varied synthesis environments during memorial diamonds' growth.

Growing Environments

Naturally Amber™ Memorial Diamonds

Human body contains 3% nitrogen [N], which gives the diamond a Naturally Amber™ colour.

Naturally Amber™ is the natural colour achieved under standard procedures.

Each memorial diamond has a natural colour (From light yellow to deep orange). No two are alike.

Purely Colourless™ Memorial Diamonds

Purely Colourless™ diamonds are created by removing nitrogen [N] from the carbon [C].

They have the highest carbon purity but also the highest price and longest creation time.

Other colours

Apart from above two featured colours, other colours of memorial diamonds are achieved by creating different physical or chemical environments as described below.

GIA logo

HPHT stands for high-pressure, high-temperature. The process is an effective tool for changing the color of certain diamonds, making them colorless, pink, blue, green, goldish green, or gold.

GIA: Gemological Institute Of America (2012) Changing the Natural Essence of the Diamond. 4Cs Education, archived on Aug. 15, 2012

Diamond Colour

Naturally Amber™

Greenish Yellow



Purely Colourless™

Price Range ()
$ 2,500
$ 8,950
$ 2,700
$ 9,950
$ 2,800
$ 10,200
$ 3,000
$ 19,850
$ 3,050
$ 21,500
3 - 6 months
4 - 7 months
4 - 7 months
5 - 8 months
6 - 9 months
Element / Symbol
Carbon / C
Nitrogen / N
Carbon / C
Nitrogen / N
Carbon / C
Nitrogen / N
Carbon / C
Boron / B
Carbon / C
Percentage in Body
Positive Health Role
(Colouring Mechanism)
N: DNA and proteins with
amino acids
(HPHT processing at
nitrogen content 1ppm
- 1000ppm;
Electrons irritating at
1KeV - 100MeV [*])
(Annealing at 500°C -
5000°C under 100kPa
- 20GPa;
HPHT processing [*])
B: Probably metabolism
of calcium
C: All vital life activities
of human body

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

LONITÉ - LONITE AG, EspañaThe origin colour of LONITÉ cremation diamond from ashes is amber yellow

Memorial Diamonds Certificates

Certification of Authenticity

Memorial diamonds are genuine diamonds that can be certified by all worldwide recognised gemmology institutes.

Independent proof.

Certificates of authenticity for LONITÉ memorial diamonds can be issued from the Gemological Institute of America (GIA), or the International Gemological Institute (IGI), which proves that all LONITÉ diamonds are genuine diamonds and certified to be lab-made (non-mined).

LONITÉ - LONITE AG, EspañaGIA man-made diamond certificate sample on LONITÉ memorial diamonds from ashes

LONITÉ - LONITE AG, EspañaIGI man-made diamond certificate sample on LONITÉ memorial diamonds from ashes

The origin of your memorial diamond is certified to be from LONITÉ laboratory.

After the memorial diamond growing process is complete, a third-party certification from GIA or IGI can be ordered to show the authenticity of your memorial diamond and most importantly, the origin of the memorial diamond – LONITÉ’s laboratory.

The origin colour of LONITÉ cremation diamond from ashes is amber yellow

Bar code is attached to containers for all intermediate steps. Tracking ID, name and dates are logged under our Standard Operating Procedures (SOP) — LNT OT95000:2010.

Personalised Service

You will be able to check the latest status every step of the way, by simply entering your order ID on our order tracking page. We are always available should you wish to enquire how the creation of your memorial diamond is progressing.

Laser Inscription

You can also name your memorial diamond. After your memorial diamond has been created, we are able to personalise it with words or a phrase engraved onto the diamond girdle.

Visible Process

Photos of important steps during the creation of your memorial diamond.

Photos of the intermediate steps.

Sending the ashes of your loved one to Switzerland can be an emotional event. As we want you to feel as involved and connected as possible, we are able to send you photographs of the creation of your memorial diamond.

It is a wonderful way to witness another stage in the existence of your loved one.

Family matters. Keep together.

Some of our customers send a photo of their family together with the ashes so this photo can be included in all photos of the memorial diamonds creation process. LONITÉ is more than happy to accommodate this request, adding a meaningful and personal touch.

ID Tracking

You will have a unique code for LONITÉ’s ID tracking QC, enabling you to see exactly which stage in the process your memorial diamond has reached, at any time.

Learn more about LONITÉ's internal process and tracking standards LNT OT95000:2010

I. Maximised Use of Ashes / Hair.

Up to 99.99%.

It would be incorrect to say that “a diamond is made 100% from ashes”✘.

To create a memorial diamond, a microscopic diamond is required as the seed crystal, from which the new diamond will evolve.

However, LONITÉ is able to produce memorial diamonds that comprise up to 99.99% carbon from human ashes or hair.

II. Natural Diamond Seed.

No CVDs.

A diamond seed is the microscopic diamond required as the foundation from which the new diamond will evolve (the seed crystal). Carbon atoms (from ashes/hair) attach themselves to the seed, under immense pressure, and begin to crystallise.

For the diamond seed, LONITÉ only ever uses single-crystal natural diamonds from the top 0.1% of quality natural diamonds instead of CVD (Chemical Vapour Deposition) diamonds.

III. Type IIb:

the Top 0.1%.

LONITÉ Blue and Purely Colourless™ diamonds distinguish themselves as type IIb diamonds.

When examined with an infrared spectrometer, these diamonds show remarkable absorption on the red side of the visible spectrum.

LONITÉ type IIb memorial diamonds are visually indistinguishable from the rarest and most valuable 0.1% of all natural diamonds, but with an extremely unique origin - from your loved one.

IV. No Heavy Metals (0.00%).

100% Safe.

LONITÉ memorial diamonds are free of lead (Pb), mercury (Hg), bismuth (Bi) and sodium bromide (NaBr).

LONITÉ uses natural and medical-safe agents to clean ashes.

No heavy metals (0.00%) are adopted in LONITÉ's process.

V. No Artificial Colourings (0.00%).

Natural Colours.

LONITÉ creates coloured diamonds by giving them the environment to grow, instead of mixing any artificial colourings onto the diamonds.

The synthesis environment only gives a colour range. The final colour depends on its origin.

Each diamond has a unique colour naturally. No two memorial diamonds are alike.

VI. 4N Purity.

The Essential 99.99%

Impurity leads to diamond flaws. It cracks the diamond crystal sometimes.

High Pressure High Temperature (HPHT) diamond synthesis can only be effectively achieved with the purest forms of carbon. All other trace elements must be removed.

Carbon is the basic life element. LONITÉ memorial diamonds contains at least 99.99% purity of carbon.

VII. 18% and 3% of Human Body.

Positive Life Elements.

Carbon [C] accounts for 18% of the human body; nitrogen [N] accounts for 3%. Both are essential for proteins (with amino acids) and DNA. Without carbon [C] and nitrogen [N], life would not exist.

The carbon purification system can leave either nitrogen or boron (related with metabolism of calcium) within the growing foundation, leading to an amber or blue colour.

Keeping carbon and removing all other elements will create a Purely Colourless™ memorial diamond.

What is and is not a Memorial Diamond?

Understand the Difference

Learn and compare.
Understand what and how we produce.
Your loved one deserves the very best.

✔ LONITÉ IS a GIA Certified Genuine Diamond.

A LONITÉ memorial diamond is physically, chemically and optically the same as a natural mined diamond.

LONITÉ's genuine diamonds possess a refractive index of 2.419, which is the same as all other natural mined diamonds.

✘ NOT a Diamond Simulant: Gem, Crystal, nor Zircons.

A "Diamond Simulant" is a fake diamond that is not made with carbon. Zircon (ZrSiO4) is one which is mass-produced for costume jewellery and clothes accessorising.

A fake diamond has a refractive index higher or lower than 2.419, which makes the brilliance and brightness very different to a genuine diamond.

✔ LONITÉ IS an HPHT Diamond.
(High-Pressure High-Temperature)

The carbon source of LONITÉ's HPHT diamonds is pure carbon powder from ashes (in a solid state).

The High-Pressure-High-Temperature process is based on the same principles of how natural diamonds are created, taking several months.

✘ NOT a CVD Diamond
(Chemical Vapour Deposition)

The carbon source of CVD diamonds is a hydrocarbon gas such as methane.

The ongoing process takes only several hours, but consumes many, many cubic meters of additive gas to provide the necessary carbon.

✔ LONITÉ IS a new-born diamond transformed from ashes.

Your memorial diamond is a new diamond grown from ashes and hair.

The essential diamond seed accounts only for 0.01%. 99.99% of the diamond are grown from life elements in the hair or cremation ashes.

✘ NOT an existing diamond injected with ashes into a hole.

Some "memorial diamonds" are nothing more than an existing diamond, drilled to enable a tiny amount of cremation ashes to be inserted.

Heavy metals like lead (Pb) and bismuth (Bi) are used in that "memorial diamonds" process.