Chrysocolla Value, Price, and Jewelry Information
Pure blue chrysocolla is extremely soft but interesting to gem collectors. On the other hand, chrysocolla that forms as gel mixed with silica and…
The Mohs Hardness Scale and Chart for Select Gems
The Mohs hardness scale measures a mineral’s resistance to scratching. Find the traditional scale here and a chart of select gems ordered by hardness.…
Shattuckite Value, Price, and Jewelry Information
Shattuckite is often mixed with quartz, and data often reported for properties may be erroneous. The cabochons are rich blue in color and very popular,…
Gem Price Guide
A guide for the price of various gemstones that is based on various sources for commonly traded goods. However, gems are sold outside this range…
The History of Lapidary
A full and complete history of the lapidary arts, from 70,000 BC to present day. The origins of faceting, bruting, and carving.
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