宝石の王 アレキサンドライト!

King of Jewels Alexandrite!

Alexandrite is called the king of gemstones, but it is a mysterious gemstone that changes from blue-green under sunlight to brown to reddish-purple under indoor light.

These stones, which change color so much that they are called emeralds during the day and rubies at night, are auction treasures.



The production areas include Russia, Brazil, Sri Lanka, India, and Africa.
It was originally discovered in Russia, but now it is rarely mined and has become rare and expensive.



Next, high-quality alexandrite was mined in Brazil, and a company called Emerald Mine acquired many alexandrite mines.
When it comes to diamonds, De Beers famously controlled the mines and prices, but when it came to alexandrite, Emerald Mine controlled both prices and quality.
However, because the miners were very poor, many of them hid the raw stones they extracted and sold them to others.
Many of the rough stones were not very good alexandrite, the cuts had few facets, and the tables were often too wide, so it was obvious at a glance that the quality was different.
However, since they were sold off-the-shelf, they were sold at a much lower price, and were called thieves' stones.
It is said that bad money drives out good money, but as thieves' stones became more common, the value of alexandrite decreased, and for a time, good ones were no longer in circulation.
However, due to the drastic decrease in mine output and the decrease in high-quality alexandrite, the price of Brazilian alexandrite has increased in recent years as its rarity value has increased.

If you have a good Brazilian alexandrite now, please cherish it.
It's getting more and more expensive.

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