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The padparadscha sapphire is the most expensive variety of the mineral corundum. It is characterized by pinkish-orange color.

This is an unusual case of pleochroism (color change) in stones, depending on the properties of the external flow of light.

Most often used in the examination of emeralds and corundums (rubies and sapphires).

If you decide to buy jewelry with black diamond / diamonds, it is important to know a few features of the market of these stones.

The term "Rauchtopaz" is a trade and not quite correct.

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