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How to Cut a Simple Heart Ruby or Sapphire

Cutting corundum gems — rubies and sapphires — can be difficult. Learn how to handle this material by faceting a simple heart ruby from lab-created rough.

ruby & sapphire survey - mozambique ruby ring
Ruby and Sapphire Survey: Where Do You Draw the Line?

Our survey asked for your input on the age-old question: where is the line between ruby and sapphire? The results may surprise you!

Crater of Diamonds State Park, AR - gem hunting in the US
Top Spots for Gem Hunting in the US

Visit one of the top gem hunting spots in the US. Go alone or with the family. A gemology-themed vacation can be fun, educational, and (maybe) profitable.

padparadscha buying guide - lotus ring
Padparadscha Sapphire Buying Guide

Lovely orange-pink sunset and lotus hues define a padparadscha. Before your padparadscha sapphire buying trip, learn the quality factors for this stone and the controversy over its definition.

triangle-cut sapphire - sapphire engagement ring stone
Something Blue: Choosing Sapphire Engagement Ring Stones

Rare, beautiful, and expensive, sapphires will really wow when brides need “something blue.” When you’re shopping for sapphire engagement ring stones, some knowledge of this gem’s optical and physical properties, grading, and varieties might save you some time and money.

sapphire buying - bluish violet, Burmese
Sapphire Buying Guide

Our sapphire buying guide can help you learn how sapphires are graded, what to avoid, and how to identify a high quality stone or a bargain in the rough.

montana sapphires - matching rings
Why We Love Montana Sapphires and Yogo Sapphires

With rich cornflower blue Yogo sapphires and fancy-colored gems in any color of the rainbow, Montana sapphires are a great choice for any jewelry piece. Learn more about what makes Montana sapphires and Yogo sapphires unique.

ten gemstones rarer than diamond - paraiba ring
Ten Gemstones Rarer than Diamond

From the seemingly common to the utterly obscure, you wouldn't guess these ten gemstones are rarer than a diamond! If you're looking for something unique for your next jewelry purchase, check out these ten stunning gemstones rarer than diamond.

sardonyx - birthstone gemology
How Well Do You Know Your Birthstone Gemology?

How well do you know your birthstone gemology? Take our short quiz and learn about the composition, cutting, and value of birthstones.

denver gem show - gems on display
Denver Gem & Mineral Showcase 2017

With over 900 vendors and numerous geologic rarities, the 2017 Denver Gem & Mineral Showcase had plenty to see. Read about some highlights in our report!