How Much You Know About Ruby?

How Much You Know About Ruby?

Chemical Formula                                                   Al2O3 Color                                                                          Red Hardness                                                                   9 Crystal System                                                         Hexagonal Refractive Index                                                       1.76 – 1.77 Specific Gravity                                                        3.9 – 4.1 Transparency                                                           Transparent to opaque Double Refraction                                                   0.0008 Luster                                                                         Vitreous to adamantine Cleavage                                                                   None, but may exhibit parting Mineral Class                                                           Corundum   Ruby  The Most Desirable Gemstone Ruby known as Manik in […]

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How Much You Know About Coral ?

How Much You Know About Coral ?

Chemical Formula                                                   Mostly calcium carbonate Color                                                                          Red Hardness                                                                   3-4 Crystal System                                                         Amorphous Refractive Index                                                       1.48 – 1.65 Specific Gravity                                                        2.6 – 2.7 Transparency                                                           Translucent to opaque Double Refraction                                                   0.172 Luster                                                                         Vitreous, waxy Cleavage                                                                   None How To Identify Coral Stone Coral known as Moonga in Hindi and Pravala in Sanskrit. Coral is […]

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How Much You Know About Emerald ?

How Much You Know About Emerald ?

Emerald  Gem Stone  Chemical Formula                                                    Be3 Al2 SiO6 Color                                                                          Green Hardness                                                                   7.5 – 8 Crystal System                                                         Hexagonal Refractive Index                                                       1.57 – 1.58 Specific Gravity        […]

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How Much You Know About Yellow Sapphire?

How Much You Know About Yellow Sapphire?

Yellow Sapphires : Important Things You Need To Know Chemical Formula                                                   AL2O3 Color                                                                          Yellow Hardness                                                                   9 Crystal System                                                         Hexagonal Refractive Index                                                       1.76 – 1.77 Specific Gravity                                                        3.9 – 4.1 Transparency                                                           Transparent to Opaque Double Refraction                                                   0.0008 Luster                                                                        Vitreous to adamantine Cleavage                                                                  None, but may exhibit parting Mineral Class                                                           Corundum   Yellow Sapphire known as […]

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How Much You Know About Diamond ?

How Much You Know About Diamond ?

Chemical Formula                                                   C Color                                                                          Colorless Hardness                                                                   10 Crystal System                                                         Isometric Refractive Index                                                       2.417 – 2.419 Specific Gravity                                                        3.1 – 3.5 Transparency                                                           Transparent to Opaque Double Refraction                                                   None Luster                                                                         Adamantine   Cleavage                                                                   1, all sides – octahedral. Dodecahedral Diamonds and Borts                    exhibit poor […]

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How Much You Know About Cat’s Eye Stone?

How Much You Know About Cat’s Eye Stone?

Cat’s Eye Stone Chemical Formula                                                   BeAl2O4 Color                                                                          Gray Hardness                                                                   8.5 Crystal System                                                         Orthorhombic Refractive Index                                                       1.744 – 1.755 Specific Gravity                                                        3.50 – 3.80 Transparency                                                           Translucent Double Refraction                                                   0.009 Luster                                                                         Vitreous Cleavage                                                                   1, 1; 3, 2 Mineral Class                                                           Chrysoberyl Benefits Of Lehsunia Stone (Cats Eye) Cat’s Eye known as Lehsunia in Hindi […]

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How much you know about Pearl Gemstone ?

How much you know about Pearl Gemstone ?

Pearl Gemstone Chemical Formula                                                   CaCO3 (92% Aragonite) and conchiolin (6%) Color                                                                          White, Cream Hardness                                                                   2.5 – 4.5 Crystal System                                                         Amorphous Refractive Index                                                       1.52 – 1.69 Specific Gravity                                                        2.6 – 2.85 Transparency                                                           opaque Double Refraction                                                   0.156 Luster                                                                        Pearly Cleavage                                                                   None   Mineral Class                                                                     […]

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How Much You Know About Blue Sapphire ?

How Much You Know About Blue Sapphire ?

Chemical Formula                                                   AL2O3 Color                                                                          Blue Hardness                                                                   9 Crystal System                                                         Hexagonal Refractive Index                                                       1.76 – 1.77 Specific Gravity                                                        3.9 – 4.1 Transparency                                                           Transparent to Opaque Double Refraction                                                   0.0008 Luster                                                                         Vitreous to adamantine Cleavage                                                                   None, but may exhibit parting Mineral Class                                                           Corundum Blue Sapphire Gemstone Benefits Blue Sapphire known as Neelam in […]

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