inclusions

Citrine is the yellow to red-orange variety of crystalline quartz. Clever marketing and the rise of “earth tone” fashions have made this durable…

Take a look at these before-and-after pics of repaired and recut gems and learn how a great lapidary can improve the value of many types of gems.

With protective settings and special care, these seven beautiful but delicate engagement ring stones can help you make a unique statement piece…

This sapphire has a pretty good color and is reasonably clean looking at normal viewing distances, in spite of having some inclusions.

The mesmerizing patterns of emerald & asscher-cut diamonds can give engagement rings a subtle style. Learn how to find a quality diamond within…

Large, faceted scheelites are among the most beautiful of all collector’s gemstones. They occur in many colors and fluoresce very brightly.…

In 2005, the Gemological Institute of America (GIA) introduced a new diamond cut grading system. This system has become the standard for modern…

Diamond overgrading at European Gemological Laboratories (EGL) made news in 2014. However, many in the diamond industry have likely not yet experienced…

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