precious gemstones
Rare brilliant minerals
Precious gemstones are minerals prized for their beauty, rarity, and durability—traditionally diamond, ruby, sapphire, and emerald.
The category distinguishes these from semiprecious stones like amethyst or topaz, though the line is somewhat arbitrary.
The ring featured precious gemstones set in platinum.
Value depends on cut, clarity, color, and carat weight.
- pearlMollusk-formed gemstone
- Koh-i-NoorHistoric large diamond
- diamondCrystallized carbon gemstone
- rubyPrecious red gemstone
- color saturationIntensity of a hue
aquamarine · spinel · amber · topaz · peridot · moissanite · lapidary · blood diamond · treasure chest · alexandrite · garnet · sapphire · carat weight · coral · emerald · amethyst · mother-of-pearl · tanzanite
precious gemstonescostume jewelry
Non-precious decorative adornments
rhinestones · cubic zirconia · knockoffs · fashion jewelry · junk jewelry
precious gemstonessynthetic gems
Man-made crystalline minerals
base metals · lab-grown diamonds · gravel · pebbles · concrete
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