Gemcorns

Gemcorns are a type of acorn made by crafting an Acorn with the respective gem. When planted on stone in the Underground layer or below, the gemcorn will grow into a Gem Tree. Although fairly uncommon, Gem Trees can be found in caverns. Chopping one down will drop 10-20 stone blocks, multiple gems of their respective type, and 0-3 gemcorns of their respective type.

Usage
They are used like regular acorns, except they can only be planted on stone. They do not drop their respective gems. They are only vanity

Crafting
A Gemcorn is crafted using one gem and one acorn.