Mohs Scale of Hardness

Hardness	Mineral	Gemstone	Colors
10	Diamond	Diamond (Natural)
9	Corundum	Sapphire, Ruby
8	Topaz	Topaz, Tourmaline, Spinel, Cubic Zircon
7.5 - 8	Beryl	Emerald, Aquamarine
7	Quartz	Agate (Aqeeq), Amethyst, Citrine, Hair quartz (Moh-e-Najaf)
6 - 6.5	Orthoclase / Rutile	Turquoise (Feroza), Kunzite, Opal, Sunstone (Sunshine), Rutile
5	Apatite	Turquoise (Feroza)
4	Fluorite	Coral, Freshwater Pearl
3	Calcite	Coral, Sea water pearl
2	Gypsum	Freshwater Pearl
1	Talc	—	—

*Note: Natural gemstones possess unique color variations, textures, and structural patterns. Actual cuts and stone appearances may vary slightly from digital catalog images.