New to gemstones? Curious about the different kinds of gemstones? Check out our gemstones list and discover a world of precious and semi-precious stones.

Group of precious and semiprecious stones—both uncut and faceted—including (clockwise from top left) diamond, uncut synthetic sapphire, ruby, uncut emerald, and amethyst crystal cluster. A gemstone …

GIA’s Gem Encyclopedia is a virtual journey through the science and lore of gemstones from across the globe. Each precious stone page features additional detailed gemological information, a buyer’s …

Jun 9, 2025 · An alphabetical list of precious and semiprecious gemstones, complete with photographs and a look at their chemical composition.

Browse our gemstone list with names, colors, and types of gems. Explore natural gems like ruby and sapphire at GemSelect for jewelry or collecting.

Jun 9, 2020 · The standard four precious gemstones aren’t the only beautiful gems. Plus, plenty of semi-precious stones are more valuable! Learn every precious and semi-precious gemstone and what …

Jan 8, 2026 · Explore our complete A to Z gemstone guide with 30+ precious and semi-precious stones. Discover properties, meanings, healing benefits, and zodiac associations for each gemstone.

May 6, 2024 · Traditionally, only four gemstones in the world are considered precious: diamonds, sapphires, rubies, and emeralds. This guide explores the characteristics of each of the four precious …

Oct 17, 2025 · Everything about precious gemstones including diamonds, rubies, sapphires, and emeralds and origins, properties in this expert guide!

Nov 12, 2020 · What Are Precious Gemstones? Only four stones are considered “precious”: sapphires, diamonds, rubies, and emeralds. These four precious stones have historically been the priciest and …