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 […]