Aries Birthstone – Red Coral

red-coral-birthstone

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…

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…

December Birthstone – Turquoise

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…

November Birthstone – Topaz

topaz-birthstone

previous month zodiac signs next month Topaz fact file Crystal Structure:orthorhombicChemical Composition:fluosilicate of aluminum Hardness:5-6 MOHSRefractive Index:colorless and blue topaz – 1.610 to 1.617yellow and brown topaz – 1.630 to 1.637Colors:Many colors including pink, blue, lavender, yellow, orange, orange-yellow, brownish…

October Birthstone – Opal

opal-birthstone

previous month zodiac signs next month Opal fact file Crystal Structure:octahedron Chemical Composition: Quartz – Silicon dioxide, SiO2 Hardness: 5 ½ to 6 ½ MOHSRefractive Index: 1.43-1.46Colors: Body color – white or tan or bluish.Play colors – red, orange, yellow,…

September Birthstone – Sapphire

sapphire-birthstone

previous month zodiac signs next month 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 Sapphire, the symbol of truth,…

August Birthstone – Peridot

peridot-birthstone

previous month zodiac signs next month Peridot fact file Crystal Structure: Orthorhombic Chemical Composition: Chrysolite or Olivene – Magnesium/Iron Silicate ( (Mg,Fe)2SiO4 ) Hardness: 6 ½ to 7 MOHSRefractive Index: 1.654 to 1.690 Colors: Transparent yellowish-green, bottle green Peridot, the…

July Birthstone – Ruby

ruby-birthstone

previous month zodiac signs next month Ruby fact file Crystal Structure: hexagonal Chemical Composition: corundum – aluminum oxide (Al2O3) Hardness: 9 MOHSRefractive Index: 1.762 to 1.77 Colors: shades of red, orange- red, or purple red Ruby is the July birthstone.…

June Birthstone – Pearl

pearl-birthstone

previous month zodiac signs next month 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 tones, tan, yellow, brown,…

May Birthstone – Emerald

emerald-birthstone

previous month zodiac signs next month 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 green Emerald, the green…

April Birthstone – Diamond

diamond-birthstone

previous month zodiac signs next month Diamond fact file Crystal Structure: isometric Chemical Composition: Carbon Hardness: 10 MOHS Refractive Index: 2.417 Colors: colorless, yellow, black, red, green, purple, blue, pink Diamond, the April birthstone, needs no explanation. The hardest mineral…

March Birthstone – Aquamarine

aquamarine-birthstone

previous month zodiac signs next month Aquamarine fact fileCrystal Structure: hexagonal Chemical Composition: Beryl – Beryllium Aluminum Silicate ( Be3Al2(Si16O18) ) Hardness: 7.2 to 8 MOHSRefractive Index: 1.57-1.59 Colors: Pale blues, light blues, yellowish blues, green, greenish-blue Aquamarine and Bloodstone…

January Birthstone – Garnet

garnet-birthstone

previous month zodiac signs next month Garnet fact file Crystal Structure: isometric,dodecahedral Chemical Composition: silicate mixtures of magnesium, iron, and aluminum Hardness: 6 ½ to 7 ½ MOHSRefractive Index: 1.7 to 1.8 Colors: Every color but Blue Garnets ( Rhodolite…

February Birthstone – Amethyst

amethyst-birthstone

previous month zodiac signs next month January Aquarius (jan 21 – feb 21) Pisces (Feb 22 – Mar 21) March Amethyst fact fileCrystal Structure: hexagonal Chemical Composition: Transparent Quartz – Silicon Dioxide, SiO2 Hardness: 7 MOHSRefractive Index: 1.5 Colors: deep…