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…
Introduction to Diamond Simulants
Step 4: Gem Grading Lesson 10 Back to syllabus Distinguishing diamonds from their lookalikes is a prerequisite to diamond grading. Assigning…
Introduction to Diamond Treatments
As long as there have been gemstones, there have been attempts to improve their appearance. With the advent of numerous new technologies available…
Beware of Overgrading
Diamond overgrading at European Gemological Laboratories (EGL) made news in 2014. However, many in the diamond industry have likely not yet experienced…
Diamond Buying and the 4 Cs, Part 4: Assessing Diamond Clarity
Confused about diamond clarity? Don’t worry. First-time buyers may find assessing diamond clarity challenging. Inclusions, tiny crystals…
Diamond Buying and the Four Cs, Part 3: Evaluating Diamond Cuts
Diamond cut quality is both the most important factor in a diamond’s beauty and its most complex, at least for non-experts. So, it’s…
Diamond Buying and the Four Cs, Part 1: Diamond Carat Weight
When diamond buying, people often ask: which of the Four Cs of gem grading — color, clarity, cut, and carat — is most important. If you’re…
Stibiotantalite Value, Price, and Jewelry Information
Rare stibiotantalite possesses an interesting mix of physical and optical properties that help distinguish it from other earth-toned gemstones.…
Milestone Anniversary Jewelry and Gemstone Gift Buying Guide (Traditional and Modern Gifts)
Knowing what to get for an anniversary can be tough. Jewelry is always a lasting, thoughtful, and sentimental way to commemorate an anniversary. …
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