Chemical Properties of Yellow Sapphire | Buy Pukhraj OnlinePosted by Bhuvnesh Aggarwal on March 23rd, 2018 GemKart : The Pukhraj is most demanding Astrology Gemstone due to its benefits and astrological properties. This further increases the price of Yellow Sapphire Stone. Yellow sapphire is the third hardest organic mineral after diamond (10 on Mohs scale) and Moissanite (9.5 on Mohs scale). And hardness of yellow sapphire is 9 on Mohs scale. The all Sapphires belong to the Corundum mineral family. It is considered as the most auspicious and beneficial stone out of all organic minerals and holds the power of planet Jupiter. As we know that the Jupiter is the heaviest planet in the solar system. The sapphires mainly are variety of the mineral corundum, an aluminum oxide (Al2O3). It is typically blue, but natural sapphires also occur in yellow, purple, orange, and green colors. This variety in color is due to trace amounts of elements such as iron, titanium, chromium, copper, or magnesium. The only color which sapphire cannot be is red – as red colored corundum is called Ruby. Significant sapphire deposits are found in Eastern Australia, Thailand, Sri Lanka, China (Shandong), Madagascar, East Africa, and in North America in a few locations, mostly in Montana. Yellow Sapphires / Pukhraj are mined from alluvial deposits or from primary underground workings. Commercial mining locations for sapphire include the following countries: Afghanistan, Australia, Myanmar/Burma, Cambodia, China, Colombia, India, Kenya, Laos, Madagascar, Malawi, Nepal, Nigeria, Pakistan, Sri Lanka, Tajikistan, Tanzania, Thailand, United States, and Vietnam. The two main forms of Pukhraj are Citrine and Yellow Topaz:
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