See https://www.kaggle.com/code/dima806/gemstones-image-detection-vit for more details.
spessartite tigers eye blue lace agate sapphire blue sapphire yellow pyrite scapolite turquoise opal grossular tsavorite larimar moonstone serpentine jade onyx red ametrine coral amazonite chrysoberyl malachite fluorite amethyst prehnite kunzite diamond carnelian quartz smoky jasper rhodolite pyrope pearl peridot dumortierite almandine aventurine yellow sphene hessonite amber tanzanite spinel aventurine green hiddenite lapis lazuli tourmaline alexandrite danburite sapphire purple spodumene sodalite garnet red chalcedony kyanite rhodochrosite goshenite variscite benitoite bixbite zircon diaspore onyx green quartz rutilated sunstone chrome diopside aquamarine iolite emerald rhodonite cats eye beryl golden quartz beer labradorite andalusite andradite ruby quartz rose onyx black chalcedony blue bloodstone chrysoprase sapphire pink morganite citrine quartz lemon zoisite chrysocolla topaz