https://sonne-sauer.mdwrite.ne....t/luxury-blue-sapphi
The most rare and valuable natural blue gemstones are sapphires. It is highly prized for its royal blue color. They also have a high level of hardness, second only to diamonds, and durability. In the gem industry, sapphire without any color prefix (such as blue sapphire) refers to the blue variety of the mineral Corundum. Sapphire also refers to other gemstone varieties and colors, such as Ruby. Lab created Sapphire corundum is a synthetically produced crystal whose with hardness on the Mohs scale that is second to diamond, maki
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