Gemstone blocks

Gemstone blocks can be crafted at a Heavy Work Bench in the Graveyard Mini-Biome. They require one gem and one stone block to craft, and when mined, drop only the gem.

Crafting
In descending order of rarity and value (rarest at the top):

Trivia

 * Before 1.4.0.1, these blocks could not be in a player's inventory, as they were exclusively naturally generated.