Colored Stone Grading System
“Just Ask Jeff” shares his thoughts on the Color Stone Grading System of The GIA. In May 2008, he had been informed that the grading system was modified.…
Common Books About Stones and Faceting
Jeff R Graham shares his opinions and thoughts on various topics in Just Ask Jeff. See some books about stones in What are good books to start with?…
The Questionable Andesine Story
Jeff R Graham shares his opinions and thoughts on various topics in Just Ask Jeff. See what his answers are to the continuing questionable Andesine…
Buying Gemstones from Shopping Networks
“Just Ask Jeff” gives his opinions and comments and detailed explanation on Buying Gemstones from shopping networks. Read on for more!
Baguette Cut Indicolite Tourmaline, Afghanistan, 1.01 cts
This is one of the last of my extremely blue tourmalines. It is a nice sapphire blue color with only a slight tinge of green.
Cordierite Value, Price, and Jewelry Information
The crystal structure of cordierite has many similarities to that of beryl; indialite, the dimorph, in fact has the same structure as beryl. Iolite…
Understanding Color in Gemology
The color of a mineral or gemstone is one of the primary attributes used for identification,but it is, unfortunately, one of the least diagnostic…
List of False or Misleading Gemstone Names
A list of False or Misleading Gemstone Names and its Actual Gemological Name. Gathered by the source “Gemstones of the World, 3rd Edition, Walter…
Tucson
If you’re new to this business, let me clue you in. If you want to know what to expect as far as trends in the jewelry world, this is the place to come
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