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WILLS Gemstone Knowledge ~ [One minute understanding - Bi-color Gemstone]

WILLS Gemstone Knowledge ~ [One minute understanding - Bi-color Gemstone]


"Double-color gemstone" refers to a natural rough stone that has two color bands at the same time when it is excavated, and after being polished, it reaches gem level. The reason for the occurrence of dual colors is that two color-causing elements appear at the same time in a gemstone, which will form a dual-color gemstone. In fact, many types of gemstones will also have a two-color effect, such as tourmaline, sapphire or ametrine, etc. can also be found.

Blue and green two-color sapphire ring

Further reading - Sapphire discoloration reaction:

【WILLS LIVE TALK Commentary】Color-changing sapphires that you must collect

Sapphire is really a gemstone family that is constantly surprising, not only in colorful colors...
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Why are bicolor gemstones so rarely seen?
Fans also have different types of gemstones in their jewelry boxes, but the colors are relatively single, and there are fewer "one stone with two colors" gemstones. The reason is that in the Hong Kong market, two-color gemstones are not mainstream gemstones, and they are often confused with "color-changing effect" gemstones. Therefore, this time I will introduce to everyone what two-color gemstones are!
Mint green mixed with light yellow tone, 2.40ct natural rectangular two-color tourmaline
Green and yellow mixed color, 1.42ct natural oval two-color sapphire
Are bicolor gemstones expensive?
Mainly depends on the variety and quality. For example, the tourmaline family is known as the "rainbow falling into the world" because it has many different colors. There is a two-color tourmaline with inner red and green characteristics that looks like a watermelon, so it is called watermelon tourmaline. High-quality watermelon tourmaline is the most valuable with "green skin and red flesh", followed by red, blue, and red and yellow, which are also called watermelon tourmalines. Among the corundum family (i.e. red and sapphire), blue-green sapphires are the most popular, and most blue-green sapphires are produced in Australia or Madagascar.
"Yuan·Yuan" natural green and blue two-color sapphire earrings
Will the price of two-color gemstones increase?
In the world of gemstones, many gemstones are also increasing in price. As long as they are natural, rare and high-quality gemstones, they have great room for price increase. If you are lucky enough to see a two-color gemstone that you like, don’t miss it!
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