Simple categories matching semiprecious:

• product,
• gemstone,
• wood,
• metal,
• stone,
• material,
• mineral,
• gem,
• commodity,

Members with property semiprecious:

• black_onyx,
• demantoid_garnet,
• tourmaline,
• amethyst,
• turquoise,
• platinum,
• peridot,
• garnet,
• malaysian_jade,
• dark-blue_mineral,
• olive_wood,
• iridium,
• chrysoberyl,
• diamond,
• agate,
• hyacinth,
• aquamarine,
• blue_chalcedony,
• abalone_shell,
• silver,
• jasper,
• turquoise_amber,
• cairngorm,
• white_opal,
• fruitwood,
• crystal,
• jade,
• blue_sapphire,
• green_garnet,
• amethyst_gemstone,
• onyx,
• gold_metal,
• sandstone,
• green_amethyst,
• india_gem,
• green_feldspar,
• fluorite,
• ruby_sapphire,
• opal,
• tulipwood,
• exquisite_coral,
• bronze,
• baltic_amber,
• tibetan_amber,
• uncut_garnet,
• lignite,
• apatite,
• marble,
• topaz,
• palladium,
• green_tourmaline,
• turquoise_gemstone,
• italian_coral,
• rhodochrosite,
• quartz,
• moonstone,
• red_limestone,
• mahogany,
• white_topaz,
• citrine,
• jewelry,
• beryl,
• malachite,
• blue_topaz,
• coral,
• alabaster,
• white_moonstone,
• zeolite,
• sapphire,
• morganite,
• steatite,
• blue_quartz,
• shell,
• sodalite,
• rosewood,
• jaspers,
• rainbow_moonstone,
• clear_quartz,
• ivory,
• ruby,
• emerald,
• natural_aquamarine,
• chalk_turquoise,
• olivine,
• alexandrite,
• binder,
• cornelian,
• chromium,
• hematite,
• pink_topaz,
• beryl_aquamarine,
• fluorite_jewel,
• bloodstone,
• copper_alloy,
• copper,
• granite,
• sunstone,
• jewelry_agate,
• aventurine,
• zircon,
• cubic_zirconia,
• amber,
• bohemian_garnet,
• kunzite,
• pink_tourmaline,
• white_turquoise,
• carnelian,
• carnelian_gemstone,
• chalcedony,
• calcedony,
• blood_stone,
• bone,
• peridot_gemstone,
• various_crystal,
• lemon_turquoise,
• nacre,
• flint,
• tourmaline_gemstone,
• obsidian,
• jet,
• steel,
• gem,
• gold,
• carbuncle,