Tag Archive for Blue Sapphire

Capricorn Birthstone – Blue Sapphire

sapphire

previous sign calendar months(Dec 22 – Jan 20) next sign Sapphire fact file Crystal Structure: hexagonal Chemical Composition: Corundum ( Aluminum oxide- Al203 ) Hardness: 9 MOHS Refractive Index: 1.762 to 1.77 Colors: yellow, green, pink, clear, and blue Capricorn,…

Aquarius Birthstone – Blue Sapphire

sapphire

previous sign calendar months(Jan 21 – Feb 21) next sign Sapphire fact file Crystal Structure: hexagonal Chemical Composition: Corundum ( Aluminum oxide- Al203 ) Hardness: 9 MOHS Refractive Index: 1.762 to 1.77 Colors: yellow, green, pink, clear, and blue Aquarians…