
Colored gemstones-These style rings are very popular right now with green being a favorite color. Gems such as ruby, sapphire, emerald and topaz are the most prevalent.


| Mineral used for comparison | Simple Hardness | Hardness | |
| Diamond |
140,000.00
| ||
| Ruby, Sapphire, Alexandrite, Chrysoberyl |
1,000.00
| ||
| Aquamarine, Emerald, Morganite, Spinel, Topaz |
175.00
| ||
| Amethyst, Citrine, Garnet, Iolite, Kunzite, Peridot, Tanzanite, Tourmaline, Zircon | Scratches window glass |
120.00
| |
| Diopside, Lapis lazuli, Orthoclase, Turquoise | Can be scratched with a steel file |
37.00
| |
| Apatite, Obsidian, Sphene, Glass | Can be scratched with a knife |
6.50
| |
| Coral, Fluorite, Pearl | Can easily be scratched with a knife |
5.00
| |
| Calcite, Ivory | Can be scratched with a copper coin |
4.50
| |
| Amber, Gypsum | Can be scratched with a fingernail |
1.25
| |
| Talc | Can be scratched with a fingernail |
0.03
|
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