• Location: Bolivia
• Weight: 6.2g
• Dimensions: 3.2 x 2.1 x 0.5 cm
• DETAILED DESCRIPTION

Amethyst cabochon – natural purple mineral The amethyst cabochon is a processed mineral belonging to the quartz group. This mineral is characterized by its typical purple colour, which can vary from delicate light lavender shades to intense and deep purple tones. The colouration of amethyst is caused by the presence of trace iron in the crystal structure and the subsequent influence of natural radioactive radiation during its geological development. Prolonged exposure to intense sunlight can, however, cause a gradual fading of the original colour. Cabochon and its use in jewellery The cabochon is a specific type of cut without facets, but with a smooth, rounded and polished surface. This processing method enhances the natural colour, pattern, and internal structure of the stone. Amethyst cabochons are very popular in jewellery making, where they are mainly used for rings, pendants, earrings, or bracelets. Thanks to its hardness of 7 on the Mohs scale, amethyst is durable enough for daily use. Formation of amethyst Amethyst is formed by crystallization from hot, mineral-rich solutions that penetrate rock cavities. Crystals grow on the walls of these cavities and form druses. If the cavity remains partially empty, a geode is formed. In some cases, these cavities can reach considerable sizes, especially in Brazilian deposits, where imposing geodes several metres in size can form. Amethyst localities The most important amethyst deposits are found in Brazil, Uruguay, Bolivia, and Madagascar. Each locality produces stones with slightly different shades and characteristics. The highest quality and darkest amethysts mainly come from Uruguay and Brazil, particularly from the state of Rio Grande do Sul. Significant deposits are also found in Madagascar, Zambia, Russia, Sri Lanka, and Mexico. Beautiful crystals have also been found in Europe, for example in the Alps and the Urals. In the Czech Republic, amethyst is known from areas such as Kozákov, the Třebíč region, and the Ore Mountains. History and meaning of amethyst Amethyst was already considered in antiquity to be a stone of protection, calm, and spiritual balance. Its name comes from the Greek word "amethystos," meaning "not intoxicated," as it was traditionally associated with protection from negative influences.