Gemstones
Heated vs Unheated Sapphire: Color, Value and What to Verify
Compare heated and unheated natural sapphires: learn how treatment affects appearance, rarity and value, and what to verify on an independent laboratory report.
Bi-Color and Color-Change Gemstones: 20 Options for Engagement Rings
Compare 20 bi-color and color-change gemstones for engagement rings, including parti sapphire, alexandrite and tourmaline, with practical buying advice.
The History of Rose Gold: Fabergé, Art Deco and Modern Rings
Follow rose gold from colored-gold craftsmanship and Fabergé through Cartier’s Trinity, wartime Retro jewelry and modern ring design.
Aquamarine Engagement Rings: Color, Cut, Value and Care
Learn how to choose an aquamarine engagement ring: compare color, cut, size, heat treatment and durability, and spot the flaws that photographs can hide.
Moonstone vs Opal Engagement Rings: Glow, Durability and Care
Compare moonstone and opal engagement rings by their light effects, identity, durability, setting choices and careful cleaning requirements.
Salt and Pepper Diamond Engagement Rings: Pattern, Sparkle and Durability
Compare salt-and-pepper diamond patterns, colors and cuts. Learn what affects sparkle, how to inspect durability, and which treatment and color claims need proof.