From Diablo Wiki
These sets only mention Rubies, Emeralds, Sapphires, and Amethysts. What about Topaz, Diamonds, and Skulls? Is this database incomplete, or are those rhinestones not used to make any crafted items?
All the crafting recipes in the game are on this page. Each of the 4 types uses the same gem in every recipe. They're fairly limited; perhaps some more varied ones will be added in v1.13. Though I wouldn't hold my breath. -Flux 15:33, 29 September 2009 (CEST)