The Swiss company Algordanza will take the cremations of your loved ones and make them into diamonds. The company filters carbon out of cremains and creates a diamond with the extracted material. According to their website, the starting cost is approximately $4,461 USD. (Source)
CONDENSE THE REMAINS OF YOUR BELOVED DEAD INTO THE NECRO DIAMOND FOR EASY SUMMONING ON THE GO. NEVER BE WITHOUT YOUR PROTECTIVE ANCESTOR SPIRITS EVER AGAIN. THE NECRO DIAMOND. A LIVING HUMAN’S BEST FRIEND.