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THE GEMOLOGY PROJECT
is a free Gemological Encyclopedia
that anyone can edit!

JOIN NOW!

FREE ONLINE GEMOLOGICAL INFO:

Houston's Gemological Resources
Appraisal and Gemological Lab

BARBRA VOLTAIRE'S #1 CHOICES
for GEMOLOGICAL INSTRUMENTS

GEMOLOGY ONLINE'S BOOK SHOP

Anything purchased in the bookshop earns a small commission for GO.

DIRECT LINKS TO TOPICS OF INTEREST:

-How to Post a Picture on the Forum

-Alphabetical List: Books on Gems, Minerals, Jewelry,
Sterling and Retated Topics including valuation and
appraisal references.

-GEMS 101:Descriptions of Gems

-Chelsea Filter Reactions

-Crystal Systems

-Diamonds: The 4 C's

-Estimating Carat Weight

-DICTIONARY of GEM TERMS

-Identifying Gems w ⁄o Instruments,W.Wm Hanneman, PhD

-LaShawn Bauer's Guide to Jewelry Appraising

-Mohs' Scale of Hardness

-Properties for Gem ID

-Trade Abbreviations and Acronyms

-Treatments & Enhancements

-Synthetic vs. Imitation Gems

-Useful Gemology Links!

GEM and MINERAL SHOW LISTS
Upcoming Gem Shows
Mindat's Upcoming Mineral Shows

GEMOLOGY ONLINE STAFF:

Administrators:

Barbra Voltaire, BSc, FGG, GG
Gemologist, Geologist, Jewelry Historian
barbra@gemologyonline.com

Alberto Scarani, IGI, GG
Gemologist, Master Goldsmith, Author
alberto@gemologyonline.com

Moderators:

Conny Forsberg, FGA
Diamond cutter, Gemologist, IT Pro
conny@gemologyonline.com

Jon Rolfe
Master Gem Cutter; Lapidary Supplier
jon@gemologyonline.com

Stephen Challener
Geologist
Stephen@gemologyonline.com

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Board index » General Gemology

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	Topics	Posts	Last post
Appraiser's Corner A section for Professional Appraisers and Valuers to discuss relevant topics. DO NOT POST JEWELRY OR GEMS NEEDING AN APPRAISAL. Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	581	5345	Thu Jul 06, 2023 11:13 am abeck
Archaeogemology A multidisciplinary approach to investigate the identity and origin of gem and jewelry artifacts Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	32	123	Sun Jul 23, 2023 5:30 pm glhays
Beginners Only! For those who are new to gemology. Just getting started in the industry and have a question about the basics? No question is too small to answer. Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	1389	13689	Sun Nov 26, 2023 2:32 pm rogerg
Collecting Gem & Jewelry Books Discussions on Contemporary and Antiquarian Gem & Jewelry Books and periodicals Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	187	1201	Thu Dec 22, 2022 8:32 am navigupta
Collector's Corner: Gems Everything relating to collecting stones goes here Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	396	12575	Fri Sep 22, 2023 12:33 pm Barbra Voltaire, FGG
Colored Stones All posts related to Colored Stones. Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	2385	33378	Mon Sep 11, 2023 4:12 am Mohmand
Contest, Quiz & Puzzle Section Stump the experts! For fun and occasionally profit! Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	135	2503	Sat Aug 13, 2022 12:01 pm abeck
CSI: Colored Stone Identification Have a gem you need help identifying? Post it here, provided you can give us more information than just a picture: RI, SG, Optic Character, Pleochroism, etc. Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	765	8126	Thu Oct 19, 2023 11:23 pm Barbra Voltaire, FGG
Diamonds Have something to say about diamonds? Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	727	6124	Wed Nov 22, 2023 5:33 pm dchallener
Field Trips for Gem Hunters A discussion of localities for gem prospecting open to the general public. Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	205	1933	Sun Nov 22, 2020 10:39 am Edward Bristol
Gem Equipment Everything about gemological microscopes, polariscopes, spectrosopes, etc Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	1338	11988	Wed Nov 22, 2023 3:04 pm dchallener
Gemology Apps and Appraisal Software Discussions and reviews of the computer software programs available for gemology and appraisal documentation. Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	43	478	Mon Apr 24, 2023 2:50 pm charlessand
Gemological Articles Read any interesting or controversial gem related articles recently? Discuss them here! Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	79	376	Thu Sep 02, 2021 5:03 pm glhays
GEMOLOGY PROJECT A free gemological encyclopedia that anyone can edit! Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	36	344	Mon Mar 21, 2022 3:36 pm abeck
Gems' Color Discussions concerning defining color in gems, Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto, Gemewizard	23	183	Mon Jul 11, 2022 1:37 pm Barbra Voltaire, FGG
Identification of Stones with Overlapping Characteristics Diagnostic Clues: How the pros separate gems whose properties overlap to the point of utter confusion! Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	57	706	Sat Apr 22, 2023 4:10 am HenkRijneveld
Jeweler's Bench Tips and Questions concerning working at the Bench Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	379	4601	Wed Jun 14, 2023 7:35 am KristenYerwood
Lapidary Corner: Colored Stones Anything related to Stone Cutting, faceting, cabbing and carving! Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto, Gearloose	2978	51086	Mon Nov 27, 2023 12:45 pm Bob Hodges
Lapidary Corner: Diamond Cutting All things having to do with the art and science of diamond cutting Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto, Gearloose, thomas.adamas	27	154	Sat Mar 21, 2020 8:50 pm Mike1187
Miner's Corner Here's the place to share comments, images of mining, new mines, and new finds Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	291	2342	Sat Jun 10, 2023 8:35 pm mehoose
My Latest Creation Cut a new gem? Design a new piece of jewelry? Share it here! Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	8	31	Fri Mar 25, 2022 1:09 pm danielle
Miscellaneous Scientific Instruments Discussion of advanced microscopic and related instruments which may (or may not) have a gemological application. Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	94	788	Thu May 12, 2022 3:06 pm S. Rautiainen
Organic Gems Topics include pearls, amber, jet, coral, ivory, etc. Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	79	684	Sat Dec 03, 2022 1:22 pm Barbra Voltaire, FGG
Other topics related to Gemology This section includes Mineralogy, Travel and General Science associated with Gemology. Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	201	1327	Sat Aug 28, 2021 2:40 pm glhays
Photography & Photomicrography Tutorials, Tips and Discussion of how to photograph gems and their inclusions Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	136	1344	Mon Apr 11, 2022 5:11 pm Greenspinel
Questions for the Experts Ask the gurus here Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	708	7233	Tue Oct 03, 2023 11:59 pm 1bwana1
Research Share your latest gemological developments Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	94	970	Sat Sep 16, 2023 4:32 pm danielle
Stone and Inclusion Photos Post links to your favorite gem images here Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	585	6247	Tue Jun 13, 2023 2:21 pm KristenYerwood
Synthetics and Treatments Comments, questions, and photos for man made and enhanced stones Moderators: Stephen Challener, Faceting 101 by Arya, Barbra Voltaire, FGG, Alberto	643	6155	Sat Nov 18, 2023 1:57 pm 1bwana1
Useful Links Share your gemology links here Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	114	468	Wed Jul 12, 2023 5:01 am danielle
Vintage & Antique Gemstones, Jewellery and Obects D'Art Vintage and Antique examples of jewellery (or jewelry) and Object D'Art which contain gemstones, for discussion and general interest. Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	244	1978	Tue Aug 15, 2023 5:48 am danielle
Virtual Marketplace Gemological discussions about products offered on eBay and other online sources. Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto	492	4087	Wed Jan 25, 2023 8:17 pm roshanravan
Meandering Footnotes A place to post detours, digressions and ponderings which have either moved away from their original topics or never really belonged there. Moderators:* Stephen Challener, Barbra Voltaire, FGG, Alberto	50	457	Thu Dec 23, 2021 1:58 pm Barbra Voltaire, FGG

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THE GEMOLOGY PROJECT
is a free Gemological Encyclopedia
that anyone can edit!

JOIN NOW!

FREE ONLINE GEMOLOGICAL INFO:

Houston's Gemological Resources
Appraisal and Gemological Lab

BARBRA VOLTAIRE'S #1 CHOICES
for GEMOLOGICAL INSTRUMENTS

GEMOLOGY ONLINE'S BOOK SHOP

Anything purchased in the bookshop earns a small commission for GO.

GEM and MINERAL SHOW LISTS
Upcoming Gem Shows
Mindat's Upcoming Mineral Shows

GEMOLOGY ONLINE STAFF:

Administrators:

Barbra Voltaire, BSc, FGG, GG
Gemologist, Geologist, Jewelry Historian
barbra@gemologyonline.com

Alberto Scarani, IGI, GG
Gemologist, Master Goldsmith, Author
alberto@gemologyonline.com

Moderators:

Conny Forsberg, FGA
Diamond cutter, Gemologist, IT Pro
conny@gemologyonline.com

Jon Rolfe
Master Gem Cutter; Lapidary Supplier
jon@gemologyonline.com

Stephen Challener
Geologist
Stephen@gemologyonline.com

FREE ONLINE GEMOLOGICAL INFO:

Houston's Gemological Resources Appraisal and Gemological Lab

BARBRA VOLTAIRE'S #1 CHOICES for GEMOLOGICAL INSTRUMENTS

GEMOLOGY ONLINE'S BOOK SHOP

Anything purchased in the bookshop earns a small commission for GO.

GEM and MINERAL SHOW LISTS Upcoming Gem Shows Mindat's Upcoming Mineral Shows

GEMOLOGY ONLINE STAFF: Administrators: Barbra Voltaire, BSc, FGG, GG Gemologist, Geologist, Jewelry Historian barbra@gemologyonline.com

Alberto Scarani, IGI, GG Gemologist, Master Goldsmith, Author alberto@gemologyonline.com Moderators: Conny Forsberg, FGA Diamond cutter, Gemologist, IT Pro conny@gemologyonline.com

Jon Rolfe Master Gem Cutter; Lapidary Supplier jon@gemologyonline.com

Stephen Challener Geologist Stephen@gemologyonline.com