garnet

Although diamond is our most popular gemstone, this hasn’t always been the case. Only in the last century did diamonds become readily available.…

Step 1: Introduction to Gemology Lesson 24 Back to syllabus The cut is humanity’s contribution to the beauty of gemstones. Color, clarity, and…

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…

Step 4: Gem Grading Lesson 2 Back to syllabus A carat is the standard unit of measurement for weighing gems, and it’s one of the Four Cs of gemstone…

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

“Fancies” — fancy shape or fancy cut diamonds — can have any finished shape other than round. Some well-known examples include princess,…

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

Step 5: Advanced Gem Information Lesson 2 Back to syllabus Synthetic diamonds aren’t new. General Electric (GE) has been making them since…