inclusions

Some optical effects in gemstones, such as color, brilliance, and dispersion, can be quite impressive. However, not all optical effects are considered…

Step 6: Appraising Lesson 2 Back to syllabus Appraising gems and jewelry involves giving an opinion of value. If you take a pair of earrings to a jewelry…

Although gemologists look at color, clarity, cut, and carat to evaluate both diamonds and colored gems, they must judge these qualities in the…

Step 4: Gem Grading Lesson 3 Back to syllabus In recent decades, something remarkable invaded the thinking process of the colored stone industry.…

Step 4: Gem Grading Lesson 4 Back to syllabus Few gemologists deal strictly with loose stones. Occasionally, most may have to grade set gemstones.…

As a professional gemologist, you’ll grade and value gems. Occasionally, you’ll come across a stone that may need recutting. However,…

Gem carvings vary widely in size, shape, and quality. You can find small, simple carvings with a glued-on bail for just a couple of dollars. Fine…

Don’t underestimate the importance of clarity, one of the Four Cs of gemstone grading. For faceted gems, basic clarity grading involves…

Step 4: Gem Grading Lesson 9 Back to syllabus Many new gemologists buy low-quality gems believing they’ve found a real bargain. However,…