GEM GRAB

This is new structure called "Gem spawner chamber"

• spawns in every biome in overworld
• spawns once in every 30 chunks on average
• spawns in y levels: 0 - -53

Gem Spawner

• spawns in every Gem spawner chamber
• spawns Purple gems every 7 seconds after right-click (only naturaly generated Gem Spawners requires that)
• doesn't drop in survival

Purple gem

• drops from Gem Spawner every 7 seconds
• if you have more than 10 in your inventory and wait 15 seconds, it awards you with Starr drop