Science, tools, identification, treatment, valuation & grading of gems
Gemstone jewelry settings, metals, tools, cutting & faceting stones
List of all gemstones from A-Z with in-depth information for each
Thousands of gem photos searchable by various properties.
Everything you need to know about buying your perfect diamond
Learn more about these popular gemstones, their meaning & about buying birthstone jewelry
Price guidance on over 70 types of gemstones
In-depth guides to quality factors of the 40 most popular gemstones
Finding a seam of precious opal is the goal of many opal prospectors. Photo by Géry Parent. Licensed under CC By-ND 2.0.
Article: Opal Prospecting and Mining
Credit: Géry Parent