sapphire

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

Unlike most online purchases, the quality of a diamond varies from one to the next. Each is unique, which means that shopping for a diamond online…

White diamonds surround this large, 1.17-ct cushion cut fancy pink diamond. “Pink Blush” © Dalby Diamonds. Used with permission.…

3.75-ct emerald-cut fancy yellow diamond with Burmese rubies. © Jogani Beverly Hills. Used with permission. Perhaps the most fantastic…

Blue diamonds are among the rarest – and priciest – gems. Named in honor of the actress Jane Seymour, this 2.08-ct VS1 fancy vivid blue…

The most popular gems in jewelry today are diamonds. Their great brilliance and dispersion (the ability to take white light and display flashes…

“Diamond Macro 3,” 1-ct princess-cut diamond engagement ring, by Stephen Durham. Licensed under CC By 2.0. There appears to be some confusion…

Step 4: Gem Grading Lesson 10 Back to syllabus Distinguishing diamonds from their lookalikes is a prerequisite to diamond grading. Assigning…

Step 2: Advanced Gemology Lesson 8 Back to syllabus In 1999, General Electric (GE) introduced a new diamond treatment into the jewelry trade. The…