Myanmar's jadeite mines occupy a privileged place, representing the planet's principal source of fine jadeite jade. This article covers the deposits themselves, along with the cutting, grading and trading of jadeite.

A history of spinel, including balas ruby and lodestone.

Digital Devil #5, where I transition from hard-nosed gemological gumshoe to lamenting the lack of romance and appreciation of beauty in gemology.

Digital Devil #4. Genius is a funny thing. Those who possess it tell you it's just a matter of hard work, elbow grease, if you will. Those of us who lack it simply stand in awe – viewing a rare jewel – the sheer majesty of it all. In my lifetime, the closest I've come to that stuff is a man named Gerry Rogers.

A critical examination of the methods used in gemological laboratories for the color grading of diamonds.

Links to websites related to gemology, gemstones, minerals and jewelry.

Digital Devil #1: The fights between gem dealers and gemologists are legendary, with each side looking down upon the other. It's truly dog against dog.