Genuine natural Ametrine ring in .925 Sterling Silver, size 7. Ametrine is a combination of Amethyst & Citrine, both types of Quartz. Each piece has a unique pattern of the 2 colors. This 12mm round gemstone is cut so you can not only see both colors, but also see the appearance vary with the viewing angle as the photos show. Ethically sourced gem in a Limited Edition design, imported from the UK. Bundle 2+ items for best deal. I'm a Certified Gemologist & GIA AJP so shop with confidence!