Spinel is a magnesium-aluminum oxide that has a magical and fascinating color and is a very precious gem. Red spinel is similar to ruby ​​and is often mistaken for ruby. In fact, it has other different colors, depending on its internal chemical composition. Usually, the internal components often contain a small amount of Fe2+, Fe3+, Cr3+, Mn2+. Co2+ and other pigment ions, so it shows different colors. The following small series of China Jewelry Merchants Network will tell you what is the distribution of spinel and spinel.
What is spinel?
The chemical formula of spinel is MgAI2O4, which has various colors, such as colorless, pink, red, magenta, yellow, blue, sky blue, brown and green, etc., which are related to some pigments in the ingredients. The content of ions is related, such as containing Cr3+, it is red, Fe2+ is blue, a small amount of Fe3+ is green, Fe3+ is brown, and Fe2+ and Cr3+ are reddish brown and purple. Spinel has a glassy transparent to translucent, crystal form is often octahedral, and sometimes forms a polymorph with the rhombohedral dodecahedron and cube, belonging to the equiaxed crystal system. The Mohs hardness is 8, the relative density is 3.57 - 3.90, the refractive index is usually 1.718, and the dispersion is 0.02. The most fascinating, famous and legendary red spinel in the world is "Immur Ruby"
Distribution of spinel origin
Spinel has been a precious gem since ancient times, and because of its beauty and scarcity, it is also one of the most fascinating gemstones in the world. The main producing areas of spinel are Myanmar, Sri Lanka, Cambodia and Thailand. Among them, Myanmar produces the best quality. Most of the products produced in the Mugu Valley of Myanmar are red, pink and orange spinels. Sri Lanka mainly produces blue. , purple spinel, magnesium iron spinel first found here, there are some red, pink, dark green, brown-green varieties, sand mines. In western Cambodia and Thailand, Bailin produces several different shades of spinel, and Thailand produces black spinels. In the Pamir region of Afghanistan, in the Pamir region, red spinel was mined in the 9th century. Light-colored spinels are produced in the northern part of Pakistan near the Harsha area.
In the late 1980s, red spinel was discovered near Majongai in Tanzania and the Uluguru Mountains in the province of Morogoro; it was also found in 1994 near Tongdulu in Tanzania. After the discovery of giant spinel crystals in the summer of 2007, the gem mines near Mahengai became famous. Most of the spinel in ancient China came from neighboring countries. In the past 30 years, some spinel deposits have been discovered in Yunnan and Xinjiang. In addition, there are spinel productions in Kuhira, Pamir, southwestern Soviet Union, Jemaa, Nigeria, India, Madagascar, etc., among which Nigeria produces deep blue spinel.
In short, spinel is a gemstone with a magical color. Although it has a lot of origin, its production is very small, and it is because it is rare and beautiful, making it more and more precious and of higher value. .
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