GIA Gem Encyclopedia | Complete List Of Gemstones
GIA’s Gem Encyclopedia is a virtual journey through the science and lore of gemstones from across the globe. Each precious stone page features additional detailed gemological information, a buyer’s guide, photos, videos & research.
Gemstone List: A Complete Gemstones List with Images - GemSelect
A complete list of precious and semi-precious gemstones: Showing over 200 gemstone varieties, our gemstone index will help you find the perfect colored stone for your jewelry, collecting and crystal healing needs.
Reference Charts & Materials - International Gem Society
Refractive indices and double refraction (birefringence) help gemologists identify gems. The following table lists these values for selected gemstones.
List of Gemstones: Precious and Semi-Precious Stones - Gem …
New to gemstones? Curious about the different kinds of gemstones? Check out our gemstones list and discover a world of precious and semi-precious stones.
Gemstone Identification Chart | Information Zone - National Gem …
National Gem Lab is providing Unique gemstone identification chart to search easily from our search bar to find Refractive Index, Hardness & Specifc gravity
Gemology Cheat Sheets - International Gem Society
Use these gemology cheat sheets to review color and clarity grading, as well as special information on diamond and opal. You can also review basic gem identification testing procedures for the refractometer, polariscope, and specific gravity.
A to Z Gemstone Guide: Regions, and Colors of 100+ Gemstones
2024年10月6日 · Explore our complete A to Z gemstone guide, featuring over 100 gemstones with their properties, regions, and colors.
Charts and Lists: Gemstone information presented in high ... - GemSelect
Find all the useful gemstone information - clarity grades, hardness scales, dispersion values, etc. - all beautifully presented in full-color charts right ...
How to Identify Gemstones (with Pictures) - wikiHow
2024年6月18日 · To identify gemstones, get an identification chart you can reference. When you find a stone, feel the surface to make sure it’s smooth, which is a sign that it’s a gemstone. The stone should not be malleable if it is a true gemstone.
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The Mineral and Gemstone Kingdom: Home
The Mineral and Gemstone Kingdom is a free informational and educational guide to rocks, minerals, gemstones, and jewelry. This site has been providing detailed information and photos of hundreds of mineral and gemstone since 1997 and is one of the leading education resources on minerals and gemstones.
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