December Birthstone

December Birthstone – Blue Zircon


previous month zodiac signs next month Zircon fact file Crystal Structure: tetragonal Chemical Composition: zirconium silicate Hardness: 7.5 MOHS Refractive Index: 1.92 to 2.02 Colors: colorless, yellow, brown, orange, red, violet, blue and green Those born in December have the…

December Birthstone – Turquoise


previous month zodiac signs next month Turquoise fact file Crystal Structure: minute triclinic crystals Chemical Composition: hydrous phosphate of aluminum and copper CuO.3Al2O3.2P2O5.9H2O Hardness: 5-6 MOHS Refractive Index: 1.61 to 1.65 Colors: Opaque, dark to light blue, different ranges of…