Violet and purple can contribute to the overall beauty of the color, while green is considered to be distinctly negative. The most common secondary hues found in blue sapphires is purple, also violet, and green. We grade sapphires upon their purity and their primary hue. Blue corundum exists in various mixtures of its primary blue and secondary hues, various tonal levels and at various levels of saturation. Saturation refers to the vividness or brightness of the hue, and tone is the lightness to darkness of the hue. Gemstone color are grading in terms of hue, saturation, and tone. It is as the insulating substrates of very special-purpose solid-state electronics. Wristwatch crystals and movement bearings. We also use in some non-ornamental applications. The second hardest mineral, after diamond at 10.
Because of the remarkable hardness of sapphires. They also can be synthetics for industrial or decorative purposes in large crystal boules. This variety in color is due to trace amounts of elements such as iron, titanium, chromium, copper, or magnesium.Ĭommonly, we cut and polish natural blue sapphires as gemstones and worn it in jewelry. Pink colored corundum may be either classified as ruby or sapphire depending on locale. The only color which sapphire cannot be is red.Īs a red color corundum is a ruby, another corundum variety. It is typically blue, but natural fancy gemstones also occur in yellow, purple, orange, and green colors, parti sapphires show two or more colors. Natural nlue sapphire is a precious gemstone, a variety of the mineral corundum, an aluminum oxide (α-Al2O3).
How can you tell if a blue sapphire is real?.
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