Determining Gemstone Value, Price, and Appraisals
How to price or obtain the value, price and appraisal of a gem or piece of gemstone jewelry.
Appraising Emeralds
Appraising emeralds is a key skill for all jewelers and gemologists. Learn how to evaluate the quality of these rare...
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Ruby and Sapphire Origins
Ruby and sapphire origins greatly affect the values of these prized gems. Learn where these stones occur and how inclusions...
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Appraising Blue Sapphires
Appraising blue sapphires is a critical skill for any jeweler or gemologist. Learn the basics you’ll need to evaluate one...
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Making Money Investing in Gems: The Top 5 Rules
How do you make money investing in gems? What should you buy, for how much, and how can you add...
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Gemstone Certificates
Can you rely on gemstone certificates to reveal everything that can affect the value of pricey gems? Learn what to...
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Exposing Diamond Overgrading at EGL Labs
The effects of the 2014 scandal over diamond overgrading at EGL labs are still emerging. Learn what gemologists and retailers...
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Jewelers Pricing Survey
The International Gem Society (IGS) ran a jewelers pricing survey in 2002 and 2012. Over those ten years, we saw...
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Is My Alexandrite Just A Color-Change Chrysoberyl?
Buyer beware! Not all color-change chrysoberyl is alexandrite. Learn the classic color ranges of true alexandrite and avoid being scammed...
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Gem Price Guide
The IGS Gem Price Guide covers many popular as well as unusual, collectible gems. Find your gem’s retail value based...
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Underkarating Fraud in the Jewelry Trade
Underkarating is a fraudulent practice whereby a jeweler represents a piece of jewelry or gold as containing more precious metal...
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Relationship Between the Price of Gold and the Price of Your Jewelry
Understanding how the price of an underlying jewelry metal, such as gold, impacts the price of your finished jewelry.
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Product Review, Opal Smart Chart
The newest thing in the opal world is the Opal Smart Chart. This is a software package designed to help...
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Product Review, Opal The Smart Chart
The newest thing in the opal world is the Opal Smart Chart. This is a software package designed to help...
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How Rare is That Gem?
Rarity is one of the most prized qualities of gemstones. But some gems are far more rare than others! This...
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