[{"n": "Diamond", "u": "/e/gemstones/diamond/", "s": "A metastable carbon allotrope with extreme hardness and thermal conductivity."}, {"n": "Ruby", "u": "/e/gemstones/ruby/", "s": "A pinkish-red to blood-red gemstone, a variety of corundum, prized for its durability and rich color."}, {"n": "Sapphire", "u": "/e/gemstones/sapphire/", "s": "A precious gemstone variety of corundum, third-hardest mineral after diamond and moissanite."}, {"n": "Emerald", "u": "/e/gemstones/emerald/", "s": "A green variety of beryl, prized since antiquity for its vivid hue and often included nature."}, {"n": "Opal", "u": "/e/gemstones/opal/", "s": "A hydrated amorphous silica mineraloid prized for its play-of-color."}, {"n": "Amethyst", "u": "/e/gemstones/amethyst/", "s": "A violet quartz gemstone long believed to prevent drunkenness."}, {"n": "Topaz", "u": "/e/gemstones/topaz/", "s": "A durable gemstone with a rich history and a range of colors, often treated to enhance its appearance."}, {"n": "Garnet", "u": "/e/gemstones/garnet/", "s": "Silicate minerals used as gemstones and abrasives since the Bronze Age."}, {"n": "Aquamarine", "u": "/e/gemstones/aquamarine/", "s": "A type of pale-blue to light-green beryl."}, {"n": "Peridot", "u": "/e/gemstones/peridot/", "s": "The olive-green gem of the mantle, born in molten rock and prized since antiquity."}, {"n": "Tourmaline", "u": "/e/gemstones/tourmaline/", "s": "A crystalline silicate mineral group with a wide variety of colors, known historically as the 'Ceylonese Magne"}, {"n": "Turquoise", "u": "/e/gemstones/turquoise/", "s": "An opaque blue-to-green gemstone prized for millennia, with classic Persian turquoise from Iran setting the st"}, {"n": "Jade", "u": "/e/gemstones/jade/", "s": "An umbrella term for two decorative rocks: nephrite and jadeite."}, {"n": "Lapis lazuli", "u": "/e/gemstones/lapis-lazuli/", "s": "A deep-blue metamorphic rock prized since antiquity for its intense color and use in ultramarine pigment."}, {"n": "Obsidian", "u": "/e/gemstones/obsidian/", "s": "Volcanic glass used for sharp tools since prehistory."}, {"n": "Pearl", "u": "/e/gemstones/pearl/", "s": "A hard, lustrous gem formed by mollusks."}, {"n": "Amber", "u": "/e/gemstones/amber/", "s": "Fossilized tree resin valued since Neolithic times."}, {"n": "Moonstone", "u": "/e/gemstones/moonstone/", "s": "Feldspar gemstone known for its pearly, opalescent schiller."}, {"n": "Onyx", "u": "/e/gemstones/onyx/", "s": "A banded agate used for carving, cameos, and jewelry since antiquity."}, {"n": "Malachite", "u": "/e/gemstones/malachite/", "s": "A green-banded copper mineral with ancient ornamental and metallurgical significance."}, {"n": "Tanzanite", "u": "/e/gemstones/tanzanite/", "s": "A rare blue-violet gemstone found only in Tanzania."}, {"n": "Quartz", "u": "/e/gemstones/quartz/", "s": "A hard, abundant mineral used in jewelry and technology."}]