Tag: rough sapphire

Blue Sapphire is a color variety of mineral corundum. The intense blue of the sapphire is caused by the addition of titanium and iron to the mineral corundum. Blue Sapphire color can be described in terms of hue, saturation, and tone. It is evaluated based upon the purity of their blue hues, clarity and size. Sapphire is a precious gemstone, a variety of the mineral corundum, […]