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Showing articles for: "Gold"
293 articles found showing 261–270
Coloured Gemstones in 2026: Rising Demand, Shrinking Supply, and the New Rules of a Rarer Market
Explore the coloured gemstone market in 2026, including demand, supply shortages, sapphire, ruby, emerald, spinel, pricing trends, sourcing, and buying insights.
Corundum: The Mineral That Gives Us Ruby and Sapphire – A Complete Guide
Discover corundum, the mineral behind ruby and sapphire. Explore its chemistry, colors, geological origins, treatments, optical phenomena, value, and buying factors.
Mandarin Garnet: The Fiery Orange Gemstone That's Taking the Jewelry World by Storm
Discover Mandarin Garnet, the rare vivid-orange spessartine gemstone. Learn about its color, origins, rarity, value, physical properties, jewelry uses, and buying factors.
A World of Yellow Gemstones: More Than Just One Shade
Discover six stunning yellow gemstones Yellow Diamond, Yellow Sapphire, Sphene, Citrine, Golden Topaz, and Heliodor and compare their color, durability, fire, rarity, value, and ideal jewelry uses.
World's Top 10 Most Expensive Diamonds: A Complete Guide to Earth's Rarest Treasures
Discover the world's top 10 most expensive diamonds, including the Koh-i-Noor, Cullinan, Hope Diamond and CTF Pink Star, and learn what makes these gems so valuable.
Blue Gemstones: Nature's Most Beautiful Shades of Blue
Explore the world's most beautiful blue gemstones, from sapphire and aquamarine to tanzanite, blue spinel, zircon, turquoise, and lapis lazuli. Learn about their colors, origins, hardness, rarity, tre...
Birthstones by Month: A Complete Guide to Colors, Meanings & History
Discover the complete guide to birthstones by month, including their history, meanings, colors, origins, symbolism, hardness, and jewelry care. Learn how each month's birthstone became a timeless symb...
Moonstone: The Gemstone with a Magical Glow, Complete Guide to Adularescence, Colors, and Value
Discover everything about moonstone, including its magical adularescence, geological formation, color varieties, June birthstone significance, hardness, value, care tips, and how to identify high-qual...
Fancy Colour Diamonds: Nature's Rarest Masterpieces
Discover everything about fancy colour diamonds, including their formation, rarity, GIA colour grading, famous mines, investment value, pricing, and why pink, blue, green, yellow, and red diamonds are...
GIA to Introduce Cut Grading for Fancy-Shaped Diamonds in 2027 -
GIA Fancy Shape Cut Grading 2027: How Oval, Pear & Marquise Diamonds Will Change Forever