Chambersite

Chambersite is a gem found exclusively in the Underground evil biomes. When a world evil spreads naturally or through Clentaminator and solution, any adjacent gem stone blocks will be converted to a Chambersite equivalent. Chambersite gem stones can appear in the Stone archetype of the present evil, except for the Ashen Factory. Chambersite gem stones cannot be converted by the the Hallow, and will instead revert to their pure form. Furthermore, all of the archetypes and their walls are craftable at a Heavy Work Bench in a Graveyard biome. Chambersites do not have their own Gem Tree, nor can they be obtained by smashing Geodes.