Gemstones 1-22
22 entries in the Gemstones compendium.
DiamondA metastable carbon allotrope with extreme hardness and thermal conductivity.RubyA durable red corundum gem, cardinal among traditional jewelry stones.SapphireA precious gemstone variety of corundum, valued for hardness and color.EmeraldGreen beryl gemstone, one of the four precious gems.OpalA mineraloid gem known for its play-of-color and amorphous silica structure.AmethystA violet quartz gemstone long believed to prevent drunkenness.TopazA hard silicate gemstone used in jewelry and adornments.GarnetSilicate minerals used as gemstones and abrasives since the Bronze Age.AquamarineA pale-blue to light-green beryl gemstone used in jewelry.PeridotA gemstone formed in the upper mantle, prized since antiquity.TourmalineA complex silicate mineral group with diverse colors and properties.TurquoiseAncient gemstone prized for its distinctive blue hue.JadeJade is a decorative rock used for ornaments and ritual objects.Lapis lazuliDeep-blue stone prized since antiquity for color and pigment.ObsidianVolcanic glass used for sharp tools since prehistory.PearlA hard, lustrous gem formed by mollusks.AmberFossilized tree resin valued since Neolithic times.MoonstoneFeldspar gemstone known for its pearly, opalescent schiller.OnyxA banded agate used for carving, cameos, and jewelry since antiquity.MalachiteGreen copper mineral used as ore, pigment, and ornament since antiquity.TanzaniteA rare blue-violet gemstone found only in Tanzania.QuartzA hard, abundant mineral used in jewelry and technology.
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