Gem textures keep changing color.
For instance, I'm the the Aughundell mines gem field right now. First, the whole field was aquamarine, then it was all japser, then citrine. I've seen this issue in effect in pretty much any gem field I've been in.
They will also sometimes become totally colorless.
It can change as I rotate my character.
Not the whole object changes, just the gem facets.