Showing posts with label spinel. Show all posts
Showing posts with label spinel. Show all posts

Tuesday, April 6, 2021

Spinel: A Case of Mistaken Identity

Photo: jewelry.org - Spinel often grows in limestone

Spinel has a "long, storied history." Some of the most famous "rubies" in the world belonging to monarchs, including the Black Prince's Ruby, a centerpiece of the British Imperial State Crown, turned out to be spinel once modern science caught up with it. Why it was impersonating a ruby nobody knows! Perhaps it's because spinel and ruby often grow in the same mine.


You may notice the Black Prince's Ruby has a tiny stone in it. Why? Some Einstein thought it a great idea to cut a hole in this lovely stone to place a feather in it! WTH, did he not know that fads come and go!!

In fact, spinels (MAI2O4) are minerals, namely octahedral crystals, consisting mostly of magnesium and aluminum. They tend to be more reflective -- glittering more than rubies, its former neighbor. Like sapphires, spinels come in a range of vibrant colors, perhaps the most coveted hues being red and blue. Yet, all the colors are gorgeous!

The Tumur "Ruby" in the Imperial Crown of Russia

Luckily spinel registers an 8 on the Moh's Hardness Scale making it a sturdy gemstone to cut and wear as necklaces, rings, earrings and bracelets. These oxide minerals are mined in Afghanistan, Brazil, Burma (Myanmar), Cambodia, Canada, Kenya, Russia, Sri Lanka, Tanzania, Thailand and Vietnam. Since 2000 glowing spinels in bright pink and blue come from Myanmar, Tanzania and Vietnam. In 2018 bright blue spinel was also discovered in the Baffin Island of Canada. Small additions of cobalt is the element which gives spinal a pure blue color.


Fortunately for Savvy Shoppers, the popularity and demand for spinel gemstones hasn't caught up with its beauty, so you can get a big rock for much less than you'd pay for sapphires or rubies.
Moreover, today's jewelers are praising Tanzanite for its value, color and shine. I understand the reasons: Tanzanite is a shimmering, vivid blue or blue-violet gemstone only found in one place, Tanzania; and once depleted, its price will rise. But Tanzanite is softer and more delicate (a 6.5 - 7) to spinel's enduring hardness (an 8 like emeralds, topaz or amethyst).

I want a spinel!๐Ÿ˜ How about you?



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