This is a wonderful unusual ring. It would work well as a cocktail, dinner, every day, anniversary or even an engagement ring. There is a single oval cut genuine natural amethyst. It is a gorgeous shade of deep purple and has excellent color and clarity. The sides of the ring are a transparent amethyst color material. It really is a gorgeous eye catching piece. The inside of the band has the mark UTC for the designer. This ring is genuine 10 k yellow gold polished to a high mirror shine. It has that warm glow and luster that only real gold has. The inside of the band is marked 10 k and the piece weighs about 4.6 g.