Amethyst

Discover our selection of natural amethyst for sale, from geodes to pieces associated with other minerals, particularly calcite. Ranging from pale violet to deep purple, these amethysts display a variety of forms and origins. Each mineral is presented with photographs and a video.

Amethyst: composition, colour and crystallisation

The violet colour of amethyst originates within the structure of quartz, a mineral composed of silicon dioxide (SiO₂). It results from traces of iron combined with the effects of natural irradiation. The intensity of this colour can vary from one crystal to another, or even within a single crystal, sometimes creating distinct zones of colour.

Amethyst belongs to the trigonal crystal system and has a hardness of 7 on the Mohs scale, like other varieties of quartz.

Formation and mineral associations

Amethyst forms in particular when silica-rich fluids circulate through fractures or cavities in rocks. The gradual growth of violet quartz on the walls of certain cavities produces amethyst geodes, especially well known from the volcanic regions of Brazil and Uruguay.

Amethyst can also occur in association with other mineral species, particularly calcite. These associations bring together minerals with different chemical compositions and crystal structures on the same piece.

Origin of the name and history of amethyst

The name amethyst comes from the ancient Greek word amethystos, meaning "not intoxicated". In antiquity, the Greeks believed that this stone could protect against drunkenness, a belief associated with its wine-like colour.

Valued for centuries for its violet colour, amethyst has long been used in jewellery and religious ornaments. Once regarded as a highly valuable gemstone, it became more accessible during the 19th century, following the discovery of extensive deposits in Brazil. Its availability increased considerably, while it continued to attract the interest of mineral enthusiasts.

Our amethysts and their origins

Our current selection includes amethysts from several regions of the world: Artigas in Uruguay, Minas Gerais and Rio Grande in Brazil, as well as various localities in Morocco, Nigeria and Bulgaria.

The collection displayed below changes as new pieces arrive and others are sold. The origins and types of amethyst available may therefore vary over time.