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Cobalt Spinel: The Enigmatic Gemstone You Need to Know About

Welcome to our comprehensive guide on cobalt spinel, the rare and stunning gemstone that has been causing ripples in the world of gemstones. If you're a gemstone enthusiast, then you need to know about this mesmerizing gemstone that has been gaining popularity in the gemstone market. In this article, we'll delve into what cobalt spinel is, its characteristics, history, origin, and value.

What is Cobalt Spinel?

Cobalt spinel is a rare and stunning gemstone that belongs to the spinel family. It has a unique deep blue color that is attributed to the presence of cobalt, which also gives the gemstone its name. Cobalt spinel is known for its high refractive index and brilliant luster, making it one of the most sought-after gemstones in the market.

Characteristics of Cobalt Spinel

Cobalt spinel has a Mohs hardness rating of 8, making it one of the hardest gemstones in the world. It has a specific gravity of 3.6-4.1 and a high refractive index of 1.712-1.725, making it highly reflective and brilliant. Cobalt spinel is usually found in octahedral crystals that range from a few millimeters to several centimeters in size.

History of Cobalt Spinel

Cobalt spinel has been known since ancient times, with records of its use dating back to the medieval period. The gemstone was highly prized by royalty and the nobility due to its rarity and stunning blue color. Cobalt spinel was also used in jewelry and was believed to have protective properties.

Origin of Cobalt Spinel

Cobalt spinel is found in various parts of the world, including Sri Lanka, Burma, Tanzania, and Vietnam. The gemstone is usually found in alluvial deposits, and mining is done manually due to the gemstone's rarity and value. Sri Lanka is one of the primary sources of cobalt spinel, and it is known for producing some of the finest quality cobalt spinels in the world.

Value of Cobalt Spinel

Cobalt spinel is one of the rarest gemstones in the world, and its value is determined by several factors, including its color, clarity, size, and cut. The gemstone's deep blue color is highly prized and is considered the most important factor in determining its value. Cobalt spinel is also highly valued for its brilliance, which is determined by the quality of the cut.

Conclusion

Cobalt spinel is a rare and stunning gemstone that has been gaining popularity in the gemstone market. Its deep blue color, high refractive index, and brilliance make it highly sought-after by collectors and gemstone enthusiasts. With its rich history, unique characteristics, and rarity, cobalt spinel is a gemstone that you need to know about.

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