Tahitian Pearls
With dark body colors and bright iridescent orient, Tahitian pearls have a unique appearance that stands out from other pearls. Learn more about…
Tahitian Pearls: Beautiful Black Pearls
With dark bodies and colorful sheens, beautiful Tahitian pearls have mesmerized jewelry lovers for decades. Learn more about these and other…
Opal Symbolism
For centuries, opal symbolism included associations with royalty and good luck. However, in modern times, this gemstone has become the object…
Table of Gems Ordered by Crystal System
This table contains a selection of minerals gemologists may encounter as jewelry stones or gem specimens. The gems are sorted by their crystal…
Specific Gravity Values of Selected Gems
Measuring specific gravity helps gemologists identify gemstones. The following table lists the specific gravity values for a variety of gem…
How to Estimate Rough Gemstone Value
Can you tell if gem rough is too expensive? Learn how to estimate rough gemstone value by considering your gem yield and the prices for your faceted…
Vintage Engagement Rings: Guide to Four Eras
Vintage engagement rings come in many different styles, but designs from four eras are very popular today. Learn more and find that perfect vintage…
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