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Polyhedral representation of spinel MgAl 2 O 4. Spinel (/ s p ɪ ˈ n ɛ l, ˈ s p ɪ n əl /) is the magnesium/aluminium member of the larger spinel group of minerals. It has the formula MgAl 2 O 4 in the cubic crystal system. Its name comes from the Latin word spinella, a diminutive form of spine, in reference to its pointed crystals.
Until recently, spinel was an underappreciated gem with little consumer recognition. Increasing demand for ruby alternatives rekindled appreciation for spinel’s rich red color and history. In ancient times, southeast Asia’s mines yielded exceptional large spinel crystals, which became the treasured property of kings and emperors, often ...
The gemstone known as spinel is actually one species in a group of related minerals known as the spinel subgroup. They are all isometric aluminum oxides with magnesium, iron, zinc, and traces of other elements. Some of the other minerals in the group are gahnite, galaxite, hercynite, and magnetite.
4 days ago · Spinel, like garnet and diamond, is singly refractive, with the same physical properties in all crystal directions. It belongs to the cubic crystal system, and its characteristic crystal shape is an octahedron, which looks like two back-to-back pyramids.
Spinel is a mineral, often found in the same places as other corundum varieties such as Ruby and Sapphire. It is often transparent, singly refractive, and measures 8 on the Mohs scale for hardness.
Aug 15, 2019 · Spinel is an isometric mineral that often forms as a result of contact metamorphism, finding its home in magnesium-rich dolomite marbles, as is the case with spinel from Myanmar and Pakistan. Other notable spinel sources are Sri Lanka, Tanzania, and Tajikistan.
Spinel, mineral composed of magnesium aluminum oxide (MgAl2O4) or any member of a group of rock-forming minerals, all of which are metal oxides with the general composition AB2O4, in which A may be magnesium, iron, zinc, manganese, or nickel; B may be aluminum, chromium, or iron; and O is oxygen.
With a hardness of 8, spinel is a durable gemstone suited for any type of jewelry. The most popular shapes are oval, round, and cushion cuts. Because of spinel’s rarity, it is often set into custom, handcrafted jewelry, making it a striking addition to any collection.
Aug 27, 2021 · There are myriad spinel stone benefits, but most popularly, spinel continues to rise in popularity as a gemstone used for fine jewelry. Because of this, it’s wise to acquaint yourself with the properties you’ll come across when buying spinel.
Spinel is a new birthstone with vivid colors that span the spectrum. It has a spectacular luster, excellent durability, and its current price might be at a low that you will never see again. Here are 13 reasons why I believe that spinel is one of the world's most overlooked gems.
