jewelry

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…

Step 4: Gem Grading Lesson 18 Back to syllabus Gemologists evaluate opals a little differently than other gemstones. The traditional Four Cs still…

Hot point testing can determine if some gem materials are plastic imitations. It can also reveal if a stone is treated with wax or plastic. By Donald…

In some cases, a hot point test won’t distinguish plastic simulants from natural gems. Some plastics release a protein smell when hot point…

Gems are frequently dyed to enhance their color. Distinguishing natural from enhanced stones is an essential skill for gemologists. The materials…

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

Disclosing enhancements is one of the most important responsibilities gemologists face. In fact, many countries are passing stricter laws…

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 27 Back to syllabus While some gems are fairly easy to distinguish, others present greater challenges to gemologists.…