Natural amethyst

Amethyst is a violet variety of quartz, known for its beauty and durability. Amethyst's chemical formula is SiO2 (silicon dioxide), and its distinctive violet colour comes from the presence of small amounts of iron and other trace elements, as well as exposure to natural radiation.

Physical and Optical Properties

- Hardness: 7 on the Mohs scale, making it hard enough for use in jewellery.

- Density: Approximately 2.65 g/cm³.

- Crystal Structure: Trigonal, with crystals that can be well-formed hexagonal prisms.

- Color: Varieties of purple, from pale to deep purple hues, sometimes with red or blue tones.

- Transparency: Transparent to translucent.

- Gloss: Vitreous.

Formation and location

Amethyst forms in volcanic rock cavities and can be found in geodes and druzes, where crystals grow freely. The most important sources of amethyst include Brazil, Uruguay, Zambia and Madagascar. Amethyst is also found in many other places around the world, with each source providing stones with unique characteristics in terms of colour and clarity.

Uses

Amethyst is widely used in jewellery such as rings, necklaces, bracelets and earrings. It is valued not only for its beauty, but also for its historical and cultural significance. In the past, amethyst was considered a symbol of royalty and spirituality and was used in various religious and healing practices.

Care and Maintenance

Although amethyst is relatively hard, it is important to protect it from scratches and dents. Cleaning can be done with lukewarm water and mild soap, avoiding the use of harsh chemicals and prolonged exposure to direct sunlight, which can discolor the stone.