Got $10,000 to spare? If yes, you can do what you want, what you want with your body- after you die.
A Swiss company provides a service where the cremated remains of a loved one convert into a diamond. The diamond can then be used in jewelry or kept in a collection.
How is this done? First, the carbon is extracted from the cremated remains. The human body is about 18% carbon, and about 2% of that remains after the cremation process. This is the carbon Algodanza uses to make their diamonds, and filters out of the other materials via a chemical process. The carbon is heated and turned into graphite, the material found in pencils.
These are the machines that exert pressure onto the graphite, mechanically transforming it into a diamond.

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