transparency

If you like red, ruby isn’t your only gemstone option. Here are 23 different red gemstones. Learn which ones are durable enough for ring use and…

Typically colorless with a “sleepy” look, cryolite is rarely found in nature. Rough suitable for gem faceting is extremely scarce. However,…

Chambersite is an exceedingly rare mineral. Although it has properties suitable for jewelry use, its crystals occur in very small sizes. Few cut…

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

Massive white barite (also called known as baryte) looks like marble and could be used for decorative purposes. In spite of the abundance of good…

Yes, the GIA has been grading lab-grown diamonds since 2007. However, the reports the GIA previously offered for lab-grown diamonds were very…

Diamonds should represent memories and promises, but unfortunately many diamonds were mined in unsafe conditions or conflict zones. It can be…

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

Today, lab-grown or synthetic diamonds are evaluated by the same grading standards used for natural diamonds. All diamonds can receive precise…