AGTA:
American Gem Trade Association - Check out the gemstone
information section, find out about upcoming trade shows, and
learn about colored gems through online gemology classes.
CIG:
Canadian Institute of Gemology - Study gemology in
Canada, or if you're anywhere else in the world, check out CIG's
online gem resources, gemstone information, newsletter archive,
gem library, gem forum, and more.
Gem
Enhancement Chart - HSN features a handy gem enhancement
guide that lists gems from A to Z showing any gem treatments,
benefit or reason for treatment, and care instructions, and brief
jewelry cleaning advice.
Gem
Enhancements and Care Guide - Handy gemstone treatment
chart from JTV lists gems, hardness, enhancement methods with
purpose and frequency, stability of treatment, and the care and
handling of each type of gemstone. Extensive gemstone types list
is conveniently listed from A to Z, on one page.
Gems
& Gemology Magazine - Print and online quarterly
publication from the GIA offers gemological information, extensive
new gem research info, articles archive, and news about the
latest gem industry information.
Gemstone
Carat Weight Calculator - Online calculator estimates
the weight of various types of gems factoring cut, measurements,
girdle, culet, and belly shape. Or, enter the dimensions and the
weight of a mystery stone and estimate its specific gravity to
help you make a guess at its gem type.
Gemstone
Inclusions Library - Online manual features illustrations
that show the inclusions in gemstones to help you identify specific
gems, treated stones, genuine gems, simulated rocks, and lab grown
gemstones.
Gemstone
Weight Estimator - Calculate the estimated carat
weight using the measurements of various gemstones online. Specify
the gem type, cut, measurements, girdle thickness and pavilion
bulge to find the approximate carat weight of a gemstone.
GIA
- Gemological Institute of America offers educational programs
for future gemologists. Online resources include gemology information,
submit a gem, learn how to buy a gemstone, or learn the 4Cs of
diamond value.
Glittering
Stones Gemstone Library - List of gemstones, with
detail information pages, includes some of the semi-precious cabochon
stones you won't find in other online libraries, plus photos gems
in finished jewelry pieces along with loose stones.
Gold
Gram Calculator - Online tool is a really quick and
handy way to calculate gold gram value based on the current gold
price.
Gold
Weight Converversion and Melt Value Calculator -
Know the current spot price of gold, and use the free online tool
to easily calculate the current value of gold according to weight
type, weight, and gold purity.
International
Colored Gemstone Association - Learn about colored
gemstones, the birthstones, check out gem shopping tips, or stay
on top of the latest gem industry news.
International
Gem Society Reference Library - Gemology information
including an introduction to gemology, detailed info about the
more common gemstones, and reference charts with birthstones,
weights, MOH's hardness scale, ring sizes, and lots more.
JCK:
Jewelers' Circular Keystone - Print trade magazine
and online e-zine offer invaluable jewelry fashion information,
industry news, articles, newsletters, and more.
Jewelry
Making Information
- Features jewelry making tips and tricks, info about beads and
beading, information about metals and metal allergies, industry
fashion trends, and other general articles about jewelry making.
Lapidary
Journal Jewelry Artist Magazine - Print trade magazine
with online version that includes an archive of gem, lapidary,
and jewelry news articles featured in back issues.
Mineral
Lab: Mineral & Gem ID Tools - Provides mineral
and gemstone identification tools including Mohs' hardness points,
specific gravity testers, Geiger counters, UV lights, diamond
and gold testers, chelsea filters and gem filters, refractometers,
reflectivity meters, mineral ID and cataloging software, field
guides and books.
Mineralogical
Society of America - This is the definitive site
to visit if you're into minerals! Features include ask a mineralogist,
crystal structure data base, and rock and mineral identification
information.
Multicolour
Gems Library - Features a fairly extensive library
of gemstones that includes most exotic gems and organic gems,
along with detail informational pages and photos of each gem type.
National
Jeweler - Information for retail jewelers and gemology
hobbyists features the latest diamond and gem buzz, designer jewelry
trends, newsletter, and jewelry trade industry news.
Quick
Beading & Jewelry Making Glossary - Basic beadwork
and jewelry making terms are explained for the beginner jewelry
maker or craft hobbyist.
Rocks
& Minerals Magazine - Print and online publication
for the jeweler, lapidary, gem cutter, mineral hobbyist, rock
collector, or anyone interested in minerals, rocks, and fossils.
Specific
Gem Enhancement Symbols - Clearly lists the various
treatments applied to gemstones along with the common abbreviations
you might see listed on a gemstone jewelry appraisal.
Tanzanite
Guide - Explains the new color grading system for
tanzanite used by the GIA and jewelry industry, with helpful tanzanite
gem information articles.
Tips
and Precautions About Body Piercing - Health information
about body piercing includes important precautions, when piercing
specific body parts, to avoid infection.
The
Mineralogical Record - Print magazine with back issues
archive, interesting mineralogical information, gem trade information,
and articles for the mineral collector are posted online.
Jewelry Resources: Jewelry Care, Gemstone Info, Gemology Info
