Memorial diamond

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Memorial diamonds are artificial diamonds that are promoted as including a certain amount of carbon from human hair or cremated remains.

Typically, these are diamonds created in a laboratory, often referred to as "synthetic diamonds", "cultured diamonds", or "laboratory-grown diamonds". Some memorial diamonds are graded by gemological laboratories, such as Gemological Institute of America (US) or Birmingham Assay Office (United Kingdom).[1]

History[edit]

The first lab-made diamonds can be dated back to the 1950s,[2] while memorial diamonds started to appear in the market in the early 2000s. More than one company has claimed to be the first to provide memorial diamonds, and both Heart In Diamond[3] and LifeGem[4] have claimed to have a patent covering the growing of a "personalized gem diamond".

Production process[edit]

Memorial diamonds are produced using hair or ashes, with other carbon ("lab carbon") added.[5]

In case of hair, it is subjected to heat treatment to extract carbon. Some laboratories also analyze the content of hair. A hair analysis report then serves as a client assurance.[clarification needed] The process of unique identification of a diamond and a person based on the hair composition is described in the diamond patent RU2282584 [6]

Carbon can be obtained from cremated human or animal remains in a particulate or gaseous form. The carbon is then filtered using a conventional filtering technique. The carbon and other elements are then purified and graphitized, for example by a halogen purification technique.[7]

The diamonds are then produced using the carbon extracted using conventional diamond synthesis techniques. As of 2009, only high pressure, high temperature (HPHT) processes using belt and cubic presses were used for the production of memorial diamonds. The memorial diamond process takes anywhere from 7-11 months depending on the size and color desired.


Companies[edit]

Several companies offer memorial diamonds, including:

References[edit]

  1. ^ LONITÉ. "Diamond | Memorial Diamonds from Ashes & Hair - LONITÉ". www.lonite.com. Retrieved 2017-02-01.
  2. ^ "Near-Colorless HPHT Synthetic Diamonds from AOTC Group". gia.edu.
  3. ^ "Personalised grown gem diamond". russianpatents.com.
  4. ^ "Patent US20040031434 - Method of making synthetic gems comprising elements recovered from remains ..." Google Patents. Google.
  5. ^ "Memorial Diamonds out of Cremains - anyone do this? Need Info". pricescope.com.
  6. ^ "ПЕРСОНИФИЦИРОВАННЫЙ ВЫРАЩЕННЫЙ ЮВЕЛИРНЫЙ АЛМАЗ И СПОСОБ ЕГО ПОЛУЧЕНИЯ" [Personalised diamond creation process]. ntpo.com (in Russian).
  7. ^ "METHOD FOR MAKING SYNTHETIC GEMS COMPRISING ELEMENTS RECOVERED FROM COMPLETE OR PARTIAL HUMAN OR ANIMAL REMAINS AND THE PRODUCT THEREOF - INTERNAT RES & RECOVERY CORP". freepatentsonline.com.
  8. ^ Eterneva website
  9. ^ Algordanza website
  10. ^ "Ever Dear". website
  11. ^ Heart In Diamond website
  12. ^ Irisgem website
  13. ^ LifeGem website
  14. ^ Lonité website
  15. ^ [1] website
  16. ^ Phoenix Diamonds website