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Showing articles for: "BLUE"
261 articles found showing 11–20
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.
Why Do Sapphires Come in So Many Colors? The Complete Scientific Guide
Discover why sapphires come in blue, yellow, pink, green, orange, purple, and more. Learn how trace elements, geology, and heat treatment create sapphire colors.
Why Fancy Color Diamonds Are Capturing Attention in 2026: The Complete Investor & Collector’s Guide
Fancy Color Diamonds in 2026: Pink, Blue, Yellow & Green Diamond Investment Guide
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...
Cobalt Spinel: Nature’s Neon Masterpiece That Outshines Sapphires!
This article introduces Cobalt Spinel, a rare gemstone known for its intense, neon-like blue color that outshines even the finest sapphires.
Diamonds in Every Shade: The Complete Guide to Natural Fancy Color Diamonds
Discover the science, colours, rarity, and value of fancy colour diamonds. Learn about yellow, blue, pink, red, and green diamonds, GIA grading, treatments, certification, and buying tips.
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...
The Natural Gemstone Spectrum: A World of Color
Discover the science behind natural gemstone colors, from ruby and sapphire to emerald, tourmaline, citrine, and amethyst. Learn how chemical elements, treatments, rarity, and quality affect gemstone...
Diamond Fluorescence: The Complete Scientific Guide to Understanding Diamond Glow Under UV Light
Discover the science behind diamond fluorescence, the defect centers that create blue, green, orange and red glow, how fluorescence affects value, and its role in diamond identification.