I added the Gem/crystal bits and think its a fun idea.
Obviously crystal + animal isn't a new idea but the genetics ideas I've got going on is so please don't copy that side of things
Main Crystal categories:
Quartz, Beryl, Corundum, Fluorite tiny bits of Rutile and schorl (black tourmaline)
The crystal genetics will have a different gene pair for each crystal type, and will work as codominant genes per crystal type, but they will always have about the same number of crystal towers, (something about how they only have so much energy that they can devote to growing crystals)
The cats will follow regular cat genetics
