Amethyst is a distinctive purple variety of crystal quartz. The colour comes from traces of iron affected by radiation, and some amethyst fades after long exposure to sunlight.
Quartz is a major constituent of the earth’s crust as well as one of the most important rock-forming minerals. The chemical composition of quartz is silicon dioxide (SiO2) – also known as silica.
A distinctive feature of quartz is its hardness, which means that it polishes well and is not easily broken. The appearance of quartz is variable – it may be coloured or colourless; transparent, cloudy or opaque.
- Single amethyst cluster piece
- Each piece is unique in size and shape and may not match those pictured
Our range from British Fossils includes a fascinating array of minerals, from amethyst to iron pyrite. These bright and colourful pieces are ideal gifts for budding geologists.
Amethyst Clusters are also available for purchase in store at Space Place.