Ametrine ring set in 14 karat yellow gold

smoke-free home. just listed a pendant that matches this ring. my grandmother thought it was a tricolor but I just checked it with the jewelry store and it's just a bicolor. citrine and amethyst. I'm thinking this is about 18 carats based on the millimeter size. emerald cut. beautiful ring and if you need a matching pendant I just listed it. just thinning out my jewelry a bit. ring can be resized. currently 5 1/4. please buy with confidence as Posh authenticates anything over $500. gem MM chart shows 20x18 is 20 carats so this is a little smaller.