Amethyst Diamond Jewellery Wedding Ring.

Amethyst Diamond Jewellery Wedding Ring.

By Stone.

Amethyst

For other uses, see Amethyst (disambiguation).

Amethyst

Amethyst. Magaliesburg, South Africa.jpg

Amethyst cluster from Magaliesburg, South Africa.

General

Category Silicate mineral

Formula

(repeating unit) Silica (silicon dioxide, SiO2)

Crystal system Trigonal

Crystal class Trapezohedral (32)

Identification