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Tutte le aste / Etnografia / Green tourmaline Ring / new- 1.48 g - (1)


Ring Green Tourmaline Set in 925. Sterling silver New and unworn Green tourmalines are also called verdelith. This designation, however, says nothing about the mineralogical assignment to a specific type of tourmaline. The name verdelith simply describes the color of the tourmaline. The mineral group of tourmalines comprises a range of boron-containing, similar ring silicates with a complex structure. Today twelve tourmaline species are distinguished, which mostly occur as solid solutions. In the past, the name 'tourmaline' was a catch-all term for unknown, usually red gemstones and was derived in the 18th century in Europe from its then source in the Sinhala language; it means 'something small from the earth' (toramolli). Today, tourmalines are often referred to as the 'gemstones of the rainbow' because of their many colors. Weight: 1.48 g 10.2 mm x 3.9 mm Ring size: U 54 UK N US 6.8 Fr 14 Inner diameter 17.2 mm Shipping as insured registered mail
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