They utilize only the carbon portions after cremating the remains. Then, the ashes and the diamond(s) are returned to the family.
Their site says:
Simply put, we have discovered how to capture the carbon that was always present, and until now, lost during cremation. Once captured, this carbon is placed in one of our unique diamond presses replicating the awesome forces of nature – heat and pressure. A diamond that takes millions of years to occur naturally can now be created from the carbon of your loved one in a matter of weeks.
The entire process of creating this beautiful, unique, and certified LifeGem memorial diamond involves cremation, creation, and faceting.
Here is a quote from their FAQ page:
<b>How many LifeGems can be made from one individual?</b>
LifeGem owns the most advanced technology and knowledge in the diamond creation industry. Our process is so streamlined, we are able to create over 100 certified, high-quality LifeGem diamonds as memorials for each family.
Their website is http://www.lifegem.com
- hope this answers SOME of his questions.