Precision Faceting a Story Gemstone: Choosing Rough
A precision faceter can turn a rough stone into a story gemstone as unique as each client. Choosing the right rough is the first step in the design…
Gemstone Encyclopedia
Detailed information for any gemstone you are interested in.
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.…
The Art and Science of Identifying Gemstones
Gemology is both art and science. Learn how identifying gemstones combines traditional testing techniques, modern software, and deductive…
Buying Gemstones in Afghanistan: A Beginner’s Guide
Considering buying gems in Afghanistan? Learn which Afghan gemstones to seek out, which to avoid, and prepare for a “buyer beware” experience.…
Ruby Buying Guide
Learn essential ruby buying tips from experts. Discover how to evaluate color, clarity, cut & carat weight. Avoid synthetic stones & treatments.…
Corundum Value, Price, and Jewelry Information
Next to diamond, corundum is the hardest mineral known and is very compact and dense, with no cleavage. As a result, corundum is one of the best of…
Pricing Information For Star Opals From Spencer, Idaho
Some opals from Spencer, Idaho show asterism or the “star stone” effect. Learn how to price these beautiful but rare star opals.
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