Color Filters for Gem Testing
A set of color filters is easy to pack for any gem buying trip, but did you know they can be useful in the lab, too? In this article, you’ll learn…
Ultraviolet Testing
Gemstone identification typically starts with measuring a specimen’s refractive index (RI) and specific gravity (SG). These two tests…
Using the Spectroscope
Step 3: Practical Gemology Lesson 3 Back to syllabus Sometimes, refractive index (RI) and specific gravity (SG) readings aren’t enough…
Optical Properties of Gemstones
We tend to take light for granted. It’s such a common thing we experience every day. Rarely do we think of the scientific definition of light…
10X Loupe for Gemologists and Jewelers
The simple 10X loupe fits in your pocket and costs less than any other piece of gemological equipment. You’ll learn more with it than any other…
Essential Tools for Gemology
Gemology involves studying the optical and physical properties that make gems such unique little treasures. Gem identification involves analyzing…
Can an I1 Clarity Diamond be Eye-Clean?
Can you save money with an I1 clarity diamond and still have a nice-looking engagement ring? Learn how to look for an affordable and eye-clean center…
Specific Gravity Testing Part 4: Refining Your Specific Gravity Testing Techniques
Factors like liquid temperature and inclusions can affect a gem’s density reading. These specific gravity testing techniques can improve your…
Before Buying a Diamond: 9 Tips You Should Know
You’ll have to make many decisions when you choose a diamond for your engagement ring. Here are nine things you should know before buying a diamond.…
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