Product Specification
| Gemstone | Hardness (Mohs Scale) | Density (g/cm3) | Refractive Index | Dispersion | Luster |
| Diamond | 10 | 3.52 | 2.42 | 0.044 | Adamantine |
| Ruby | 9 | 4 | 1.76 - 1.78 | 0.018 | Vitreous |
| Sapphire | 9 | 4 | 1.76 - 1.78 | 0.018 | Vitreous |
| Emerald | 7.5 - 8 | 2.72 - 2.78 | 1.57 - 1.58 | 0.014 - 0.016 | Vitreous |
| Aquamarine | 7.5 - 8 | 2.72 - 2.78 | 1.57 - 1.58 | 0.014 - 0.016 | Vitreous |
| Garnet | 6.5 - 7.5 | 3.62 - 4.32 | 1.72 - 1.89 | 0.030 - 0.059 | Vitreous |
| Amethyst | 7 | 2.65 | 1.54 - 1.55 | 0.013 | Vitreous |
| Topaz | 8 | 3.49 - 3.57 | 1.61 - 1.62 | 0.014 - 0.018 | Vitreous |
| Opal | 5.5 - 6.5 | 2.15 - 2.25 | 1.44 - 1.46 | 0.095 - 0.110 | Waxy |
| Citrine | 7 | 2.65 | 1.54 - 1.55 | 0.013 | Vitreous |
