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 …

Alters Gem Jewelry is located in Beaumont's west end on Dowlen Road. They offer a wide variety of unique jewelry and watches. With more than 30 designer brands, they can help you get exactly what …

Established in 1931, GIA is an independent nonprofit that protects the gem and jewelry buying public through research, education and laboratory services.

2 days ago · Grading trends for PSA, BGS, SGC, and CGC - including total cards graded by day, week, and month.

Ply Gem offers high-quality residential windows in a variety of styles and materials backed by industry leading warranty. Browse Ply Gem collections today!

Dec 26, 2025 · gemstone, any of various minerals highly prized for beauty, durability, and rarity. A few noncrystalline materials of organic origin (e.g., pearl, red coral, and amber) also are classified as …

Information and educational services for everyone interested in gemstones. For gemologists, hobbyists, jewelers, lapidaries and everyone in between. Learn how to get started with the International Gem …

Articles about gemstones written by a GIA Graduate Gemologist. Each article includes photos and information about the gem's physical properties and geologic origin.

Learn more about Gem Shopping Network, how to shop with us, how to make an offer and much more!

Sep 22, 2025 · Explore the most complete 2025-2026 calendar of rock, gem, and mineral shows in the U.S. and worldwide. Find upcoming expos, locations, and what to expect—perfect for collectors, …