. . and probably others have followed by now - had his ashes taken to a ceramicist who used them for an ash glaze on a jar.
Pretty cool - his family can use the jar to contain all the diamonds they have the rest of their relatives made into - that wasn't an option yet in his day.
With first quality flawless diamonds fast headed for a couple hundred bucks a carat the diamond makers have to have some sort of trick to stay profitable. Making your deceased relatives into diamonds is a really cool idea.
Peggy came by a couple of weeks ago to pick up the ashes of her mom, who had resided the last 5 years or so on a shelf in my garage (had to move her out there 'cause I needed the bookshelf space). Unfortunately her mom was just not diamond grade material, so I suspect she'll just get planted somewhere.