Considering buying gems in Afghanistan? Learn which Afghan gemstones to seek out, which to avoid, and prepare for a “buyer beware” experience.
What's the best doublet glue for creating assembled stone jewelry? Learn about the choices as well as tips for making the bond between gemstones stick.
Oil treatment is a standard industry practice for enhancing emeralds. However, the treatments are not permanent. Learn how to re-oil emeralds safely.
What's the difference between a lab-created emerald and a natural emerald? Is a synthetic gem a real gem? Learn the facts before you buy emerald jewelry.
Emeralds get their green color from chromium and vanadium. Learn how the presence of these elements affects their formation and causes emerald fractures.
Gem repair is challenging but can also bring new life to vintage jewelry. Learn how to repair a cracked emerald with Opticon sealer and a small vacuum.
Although emeralds and peridots are both green gems, differences in shade might make it hard to pair them in jewelry. Learn how to look for the right match.
Did you know most gem species can be distinguished without the element of color? Learn the role gemstone colors play in gem identification.
Many varieties of gems besides diamond can be created in the laboratory. Our synthetic gemstone guide covers many examples and explains their manufacture.
Learn how gems absorb wavelengths of light and how gemologists use gemstone absorption spectra to identify gems. There’s more to color than meets the eye!