Sterling silver ring with a faceted oval dark amethyst. The amethyst has been bezel set and measures 14mm x 10mm. Amethyst is from the quartz family and can vary in colour from a light pastel to the darker more expensive colour.
The quartz family also has citrine, rose quartz and smoky quartz in it. It is 7 on the Mohs hardness scale, which is similar to glass.