Australian Gemstone & Silver Arts & Crafts Brooches
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Three Australian Arts & Crafts gemstone & silver brooches, unmarked. Includes aventurine quartz, and two ornamental blue gems likely sodalite and lapis lazuli, length 48 mm, 48 mm, 40 mm
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- Aventurine Quartz - Aventurine quartz is a variety of quartz that contains small sparkling mineral inclusions, typically of mica or hematite. The inclusions give the stone a shimmering or glittering effect, making it a popular choice for jewellery. It is found in various colours, including green, blue, brown, and red, with green being the most common. The green colour is due to the presence of fuchsite, a type of mica.
In jewellery making, aventurine quartz is often used for beads, pendants, and cabochons. It can be cut into various shapes and sizes and can be polished to a high shine. Aventurine quartz is also popular in tumbled stone form for use in necklaces, bracelets, and other jewellery. - Lapis Lazuli - Lapis lazuli is a semi-precious deep blue coloured stone, sometimes with gold inclusions, that has been used for thousands of years for jewellery, decorative items and decoration.
It is mined in Afghanistan, Siberia, Chile, USA and Burma. The mines in north-eastern Afghanistan are the largest source of lapis lazuli, and have been operating for over 6,000 years.
They were the source of the stone for the ancient Egyptian, Greek and Roman civilsations.
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