Just glued on a cheap bracelet but would these be Ametrine please? Closest I can find online! Thankyou
Quartz. Ametrine is yellow and purple, generally artificially colored/irradiated. These are lord-knows-what. I'd classify it as Random Pretty Rock.
Looks like rough ametrine, the growth form of the amethyst looks natural. Gem quality is smoother with much better clarity. Also ametrine is quartz, just yellow and purple quartz formed together. Most gem quality ametrine is lab grown or heavily processed.
I can remember making one at school. They were all the rage back then. I seem to remember all the gems dropping off mine soon after!