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MOHS GEMSTONE HARDNESS SCALE
GEMSTONE |
MOHS HARDNESS SCALE (APPROX.) |
ACHROITE (TOURMALINE) |
7.50 |
AGATE (CHALCEDONY) |
7.00 |
ALBITE |
6.00 |
ALMANDINE GARNET |
7.50 |
AMETHYST (QUARTZ) |
7.00 |
AMBLYGONITE |
6.00 |
ANDALUSITE |
7.50 |
ANDRADITE (GARNET) |
6.50 |
ANGLESITE |
3.00 |
APATITE |
5.00 |
AQUAMARINE (BERYL) |
7.50 |
ARGONITE |
3.50 |
ADVENTURINE (QUARTZ) |
7.00 |
AMBLYGONITE |
6.00 |
AXINITE |
7.00 |
AZURITE |
3.50 |
BARITE |
3.00 |
BENITOITE |
6.50 |
BERYLLONITE |
5.50 |
BLOODSTONE (CHALCEDONY) |
7.00 |
BRAZILIANITE |
5.50 |
BROWN QUARTZ (SMOKEY) |
7.00 |
CALCITE |
3.00 |
CARNELIAN (CHALCEDONY) |
7.00 |
CASSITERITE |
6.50 |
CELESTINE |
3.50 |
CERUSSITE |
3.50 |
CHALCEDONY |
7.00 |
CHATOYANT (QUARTZ) |
7.00 |
CHRYSOBERYL |
8.50 |
CHRYSOPRASE (CHALCEDONY) |
7.00 |
CITRINE (QUARTZ) |
7.00 |
CORAL |
3.00 |
CORRUNDUM |
9.00 |
CUBIC ZIRCONIA |
8.75 |
DANBURITE |
7.00 |
DATOLITE |
5.00 |
DIAMOND |
10.00 |
DIOPSIDE |
5.50 |
DIOPTASE |
5.00 |
DOLOMITE |
3.50 |
DRAVITE (TOURMALINE) |
7.50 |
DUMORTIERITE |
7.00 |
EMERALD (BERYL) |
7.50 |
ENSTATITE |
5.50 |
EPIDOTE |
6.50 |
EUCLASE |
7.50 |
FIRE AGATE (CHALCEDONY) |
7.00 |
FLOURITE |
4.00 |
GARNET |
7.00 - 7.50 |
GLASS |
5.00 - 6.00 |
GOLD |
2.25 |
GOSHENITE (BERYL) |
7.50 |
GREEN GROSSULAR (GARNET) |
7.00 |
GREEN SAPPHIRE |
9.00 |
GREEN TOURMALINE |
7.50 |
GROSSULAR GARNET |
7.00 |
GYPSUM |
2.00 |
HAMBERGITE |
7.50 |
HAUYNE |
6.00 |
HELIODOR (BERYL) |
7.50 |
HEMATITE |
6.50 |
HESSONITE (GROSSULAR GARNET) |
7.25 |
HOWLITE |
3.50 |
HYPERSTHENE |
5.50 |
INDICOLITE (TOURMALINE) |
7.50 |
IOLITE |
7.00 |
IVORY |
2.50 |
JADE |
6.50 - 7.00 |
JASPER (CHALCEDONY) |
7.00 |
KORNERUPINE |
6.50 |
KUNZITE (SPODUMENE) |
7.00 |
KYANITE |
5.00 o r 7.00 |
LABRADORITE |
6.00 |
LAPIS |
6.00 |
MALACHITE |
3.50 - 4.00 |
MEERSCHAUM |
2.50 |
MILKY QUARTZ |
7.00 |
MORGANITE (BERYL) |
7.50 |
NEPHRITE (JADE) |
6.50 |
OBSIDIAN |
5.00 |
OLIGOCLASE |
6.00 |
ONYX |
7.00 |
OPAL (CHALCEDONY) |
5.00 - 6.50 |
ORTHOCLASE |
6.00 |
PADPARADSCHA (CORUNDUM) |
9.00 |
PEARL |
2.25 - 4.50 |
PERIDOT |
6.50 - 7.00 |
PETALITE |
6.00 |
PINK SAPPHIRE |
9.00 |
PHENAKITE |
7.50 |
PHOSPHOPHYLLITE |
3.50 |
PLATINUM |
4.00 |
PREHNITE |
6.00 |
PYRITE |
6.00 |
PYROPE GARNET |
7.25 |
QUARTZ |
7.00 |
RED BERYL |
7.50 |
RHODOLITE GARNET |
7.00 - 7.50 |
RHODONITE |
6.00 |
ROSE QUARTZ (QUARTZ) |
7.00 |
RUBELLITE (TOURMALINE) |
7.50 |
RUBY (CORUNDUM) |
9.00 |
RUTILE |
6.00 |
SAPPHIRE (CORUNDUM) |
9.00 |
SARD (CHALCEDONY) |
7.00 |
SCAPOLITE |
6.00 |
SCHEELITE |
5.00 |
SCHORL (TOURMALINE) |
7.50 |
SERPENTINE |
5.00 |
SILVER |
2.50 |
SILLMANITE |
7.50 |
SINHALITE |
6.50 |
SMITHSONITE |
5.00 |
SODALITE |
5.50 |
SPAHLERITE |
3.50 |
SPHENE (TITANITE) |
5.00 |
SPINEL |
8.00 |
SPESSARTINE (GARNET) |
7.00 |
SPODUMENE |
7.00 |
STAUROLITE |
7.00 |
TAAFFEITE |
8.00 |
TANZANITE |
6.50 |
TITANITE |
5.00 |
TOPAZ |
8.00 |
TOURMALINE |
7.00 - 7.50 |
TORQUOISE |
6.00 |
TSAVORITE |
7.5 |
TUGTUPITE |
6.00 |
UVAROVITE (GARNET) |
7.50 |
VESUVIANITE |
6.50 |
WATERMELLON (TOURMALINE) |
7.50 |
YELLOW TOURMALINE |
7.50 |
ZOISITE |
6.50 |
ZIRCON |
6.50 |
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