An Interview with Opal Expert Joel Ragan
I recently had a chat with opal expert Joel Ragan about all things opal. This “opal-holic” has 45 years of experience cutting opal and designing…
Tips for Cabbing and Carving Opals
Cutting opals is a delight, but gem cutters may encounter a number of challenges when cabbing. However, with some carving techniques and a little…
Opal Synthetics
As opal synthetics grow more sophisticated, identifying this material becomes ever more difficult. Learn about five different kinds of lab-made…
Opal Simulants
With a fascinating folklore and intense beauty, opal has inspired many imitations. Jewelers have used a variety of synthetic materials as well…
Assembled Gems
An assembled gemstone is constructed from two or more combined materials. Gemstone doublets and triplets, intarsias, and rhinestones are all…
Opal Treatments
Whenever you’re purchasing opal gems, you should check whether they’ve undergone any enhancements or if they’re actually …
Appraising Opals
Step 4: Gem Grading Lesson 17 Back to syllabus Gemologists can determine the color, clarity, and cut grades of gems like diamonds and rubies reasonably…
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