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https://www.gemsociety.org/article/spinel-jewelry-and-gemstone-information/
Spinel is actually a large group of minerals. Gahnite, hercynite, ceylonite, picotite, and galaxite are all part of the spinel group. These materials are very dark and rarely used as gems. They’re all isometric oxides of magnesium, iron, and zinc, with traces of aluminum and other elements.
https://www.gia.edu/spinel-description
The spinel used in jewelry is a small part of a group of minerals that share the same crystal structure. Not all of them form transparent crystals suitable for jewelry use, however. Spinel offers a range of hues, from orange to intense “stoplight” red, vibrant pink, and all shades of purple, blue, and violet through bluish green.
https://www.gia.edu/spinel
Like ruby, spinel is found in alluvial deposits; it ranks 8 on the Mohs scale and has good toughness, making it a durable gem for jewelry. Collector’s Favorite Well-formed spinel crystals are in high demand among mineral collectors.
http://www.golddefinitions.com/jewelry-information/gemstones/spinel
A hard and durable gemstone, spinel is commonly used as a replacement for ruby or sapphire for jewelry. Spinel was only recognized as its own gem species as late as 1587, after a long career of masquerading as ruby – it can even be found on several of the Crown Jewels. Some of the world’s most spectacular finds of spinel have come from ...
https://www.josephjewelry.com/guide/glossary/spinel
Spinel. spi· nel spə-ˈnel. noun. A semi-precious gemstone consisting of an oxide of magnesium and aluminum that varies from colorless to ruby red to black. Spinels have risen in popularity since the late 19th century. Beforehand, they were either identified as corundum or mistakenly as ruby. Spinel is one of the birthstones for August.
https://en.mimi.hu/jewelry/spinel.html
Spinel is the great imposter of gemstone history: many famous rubies in crown jewels around the world are actually spinel. Spinel Because it was often found with corundum in gem deposits and has a similar color range , luster and hardness , it was, until modern times, used unknowingly as sapphire , …
https://www.langantiques.com/university/spinel/
Spinel is a magnesium aluminum oxide, occurring in many colors with excellent durability. Natural spinel is really a group of related minerals in which its magnesium is substituted with other elements, like iron, manganese and zinc. Spinel is found in areas that are famous for sapphire deposits.
https://www.ross-simons.com/jewelry/gemstones--spinel/
Spinel can be found in a wide array of breathtaking colors, some of which can be seen in Ross-Simons' varied collection of spinel rings, spinel bracelets, spinel necklaces and spinel earrings. Because spinel is a well-kept secret, spinel jewelry is surprisingly affordable, so you can build your jewelry collection for …
https://www.gemporia.com/en-us/spinel-jewelry/
Spinel Jewelry Not every gemstone has the honour of being featured in the Crown Jewels, but the lustrous spinel does. Typically a dark, rich colored gem, our spinel jewelry is available as necklaces, bracelets and as spinel rings. Spinel Rings Spinel Earrings Spinel Necklaces …4.8/5
https://www.etsy.com/market/spinel_jewelry
Black Spinel Necklace in Sterling Silver Black Spinel Jewelry Minimalist Beaded Layering Necklace Handmade Christmas Gift Birthday Gift NirvanaIN. From shop NirvanaIN. 5 out of 5 stars (1,483) 1,483 reviews. Sale Price ...
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