sapphire

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…

“Just Ask Jeff” gives his opinions and comments and detailed explanation on Buying Gemstones from shopping networks. Read on for more!

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.

The crystal structure of cordierite has many similarities to that of beryl; indialite, the dimorph, in fact has the same structure as beryl. Iolite…

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…

A list of False or Misleading Gemstone Names and its Actual Gemological Name. Gathered by the source “Gemstones of the World, 3rd Edition, Walter…

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

Below are a number of comments, instructions, and hints that I thought would be of interest.  Enjoy:) Tin Lead lap with Linde A will polish more…

Spinel has played an important part in gem history. Prior to the last century, it was impossible to distinguish from ruby and sapphire once it was…