As of 2016, gemstone identification charts/guides include the "Tables of Gemstone Identification," "Picture Identification Guide for Polished Stones" and "Tumbled Rocks, Minerals.net and Gem Mine Online." Many of these guides provide photos highlight each gemstone's characteristics, and most of these guides are available for free viewing online.Continue Reading
"The Tables of Gemstone Identification" is available for ordering from GemBlueChart.com. The book includes several charts that help users distinguish between natural and treated gemstones and synthesis and imitations, and it also provides standard gemological tools used by scientists. The book also helps users avoid misleading identification and results.
"The Picture Identification Guide for Polished Stones and Tumbled Rocks" from RockTumbler.com includes pictures and information about Amazonite, Banded Amethyst, Banded Carnelian, Blue Beryl and Blue Lace Agate. The website also provides gemstones for purchase.
Minerals.net provides a gemstone guide rather than a chart, and users can scroll through a list of pictures and names and click on individual entries for gemstone descriptions, including chemical formulas, colors, hardness, crystal systems and luster. Entries include Malachite, Moonstone, Kunzite, Kyanite and Smoky Quartz. The website provides an alphabetical directory of the different gems.
Gem Mine Online features Amazonite, Amethyst, Aventurine, Clear Quartz and Rubies, along with picture and written guides to identification.Learn more about Precious Metals & Gems