I have backed a previous kickstarter for gemstone dice from Adam, and the dice were fantastic. I picked up 3 poly sets and an extra pair of d10 and they were all nice. I am in on this KS too:
https://www.kickstarter.com/projects/579878362/engraved-gemstone-dice-hematite-lapis-lazuli-and-m
https://www.kickstarter.com/projects/579878362/engraved-gemstone-dice-hematite-lapis-lazuli-and-m