Large Brandberg Optic Quartz Cluster Natural Specimen - 79mm, 92g
Locality - Brandberg Area, Dâures, Erongo Region, Namibia Size – 79 x 57 x 44mm Weight – 92g
This natural quartz cluster boasts an incredibly sizable, fully intact termination point reaching to 70mm with a thickness of 25mm by 18mm. Within this crystal are large, shiny silvery internal reflective veils and a faint amethyst phantom and its surface is lustrous and slightly etched at its apex. Clinging to its sides are splayed, optic clear, clustered crystals. Quartz specimens from the Brandberg Area in Namibia are regarded as some of the finest in the world and are highly sought after by discerning mineral collectors.
Quartz is the most common mineral found on the surface of the Earth, occurring in virtually every locality. Pure crystals are colourless, transparent and hard, though many are coloured by natural processes such as irradiation or by the presence of certain elements within them. These coloured varieties include the popular gemstones amethyst, purple quartz, and citrine, yellow quartz. Some quartz crystals have unique inclusions of minerals that have grown within them, such as golden rutile, tourmaline or chlorite, and others may show silvery reflective internal veils and bright rainbows. Whilst the majority of quartz is created from molten magma that has cooled and crystallized, much quartz also chemically precipitates from hot hydrothermal veins.