Yellow Sapphire is a yellow color variety of mineral corundum. Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminum oxide with trace amounts of elements such as iron, titanium, chromium, copper, or magnesium. Sapphire deposits are found in Eastern Australia, Thailand, Sri Lanka, China, Vietnam, Madagascar, Greenland, East Africa, and in North America in mostly in Montana. Madagascar, Sri Lanka, and Kashmir produce large quantities of fine quality Sapphires for the world market. Sapphires are mined from alluvial deposits or from primary underground workings. Blue Sapphire and Ruby are the most popular Gemstone in Corundum Family.
also, Orangy Pink Sapphire is called Padparadscha. The name Drive's from the Sinhalese word "padmaraga" " පද්මරාග", meaning lotus blossom, as the stone is of a similar color to the lotus blossom. Also, Sapphire can be found as parti-color, bi-color or fancy color. Australia is a main parti-color Sapphire producer. Sapphire Crystal system is a Trigonal crystal system with hexagonal scalenohedral crystal class. Sapphire hardness is 9 according to the Mohs hardness scale with 4.0~4.1 specific gravity. Refractive index ω=1.768–1.772 nε =1.760–1.763
Solubility = Insoluble
Melting point = 2,030–2,050 °C
Birefringence = 0.008
Pleochroism = Strong
Luster = Vitreous Sapphire is the birthstone for September and the gem of the 45th anniversary.
Healing Properties of Sapphire
Sapphire releases mental tension, depression, unwanted thoughts, and spiritual confusion. Sapphire is known as a "stone of Wisdom". It is exceptional for calming and focusing the mind, allowing the release of mental tension and unwanted thoughts. Sapphire is also the best stone for awakening chakras. Yellow sapphire stimulates Solar Plexus Chakra