inclusions

Trigon inclusions are part of a natural, uncut diamond’s original crystal structure. These were photographed on the surface of a rough…

Use these gemology cheat sheets to review color and clarity grading, as well as special information on diamond and opal. You can also review basic…

Step 3: Practical Gemology Lesson 28 Back to syllabus While preparing this lesson in gemstone examination, I was in the process of professionally…

Step 3: Practical Gemology Lesson 29 Back to syllabus We’ve designed a series of realistic gem identification quizzes for gemology students.…

Step 3: Practical Gemology Lesson 30 Back to syllabus In this set of gemstone identification quizzes, I’m placing you in a familiar situation.…

By now, you know that gemstone identification is like detective work. As a gemologist, you gather clues and eliminate possibilities through a…

A dichroscope is one of the most useful instruments a gemologist can have. Its primary purpose is to determine the pleochroism of a gem. This can…

Sometimes, microscopic inclusions and color banding are the only way to distinguish natural from synthetic gems. This makes the microscope an…

Step 3: Practical Gemology Lesson 10 Back to syllabus Getting accurate readings when testing gemstone specific gravity is critical. If you make…