previous sign calendar months(July 23 – Aug 22) next sign Ruby fact file Crystal Structure: hexagonal Chemical Composition: corundum – aluminum oxide (Al2O3) Hardness: 9 MOHS Refractive Index: 1.762 to 1.77 Colors: shades of red, orange- red, or purple red…
previous sign calendar months(May 22 – June 21) next sign Emerald fact file Crystal Structure: hexagonal Chemical Composition: Beryl – silicate of Beryllium and Aluminum Al2Be3(Si6O18) Hardness: 7.5 to 8 MOHS Refractive Index: 1.57 to 1.60 Colors: light to dark…
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,…
previous sign calendar months(June 22 – July 22) next sign Pearl fact file Crystal Structure: orthorhombic Chemical Composition: Aragonite ( calcium carbonate ) platelets held together by conchiolin Hardness: 2.4 – 4.5 MOHs Refractive Index: 1.53-1.69 Colors: white with pink…
previous sign calendar months(Mar 22 – April 20) next sign Coral fact file Crystal Structure: Amorphus,Hexagonal micro crystals Chemical Composition: calcium carbonate with traces of carotene Hardness: 3.5 MOHs Refractive Index: 1.486-1.658 Colors: red, black,pink A Cardinal sign with Fire…
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…