It is assessed based on their inner hue purity. ![]() Blue Sapphireīlue sapphire can be found in various mixtures of its primary (blue) and secondary shades, different tonal levels, and different saturation levels. Natural sapphires come in different variations and colors. ![]() Sapphire is also one of the hardest minerals being a 9 on the Mohs Hardness Scale after diamond at 10. The only color corundum which is not used for sapphire is red, the red stones are known as Rubies. In some cases, sapphires can show two or more colors, which are known as “parti sapphires.” Generally it comes in blue, but some natural fancy variations occur as yellow, purple, orange, and green. It is a precious gemstone with trace quantities of iron, titanium, chromium, copper, or magnesium components which give them particular colors. I consists mostly of aluminum and oxygen atoms in a proportion of two to three (Al203). ![]() Sapphire is the gemstone that comes from the mineral corundum.
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