February 28-March 2—NEWARK, CALIFORNIA: Annual show; Mineral and Gem Society of Castro Valley



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

The Gemology Project: Wiki Style Gemology Encyclopedia
JOIN NOW!

 


FREE ONLINE GEMOLOGICAL INFO:

Complete Collection Of Gems & Gemology




Justin K. Prim: MAGUS GEMS




Geminterest

Magnetism in Gemstones






Gill's Historical Index to Gems and Gemology




Inclusions in Gems

Houston's Gemological Resources
Appraisal and Gemological Lab

 

 

BARBRA VOLTAIRE'S #1 CHOICES
for GEMOLOGICAL INSTRUMENTS




Magi Labs

 

A quaint Book Shop

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
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Thu Mar 20, 2025 3:52 am

View unanswered posts | View active topics


Board index

All times are UTC - 4 hours


View unanswered posts

   Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. A heat treated Kashan flux synthetic ruby

in Lotus Gemology

Dioptase

0

131

Tue Mar 18, 2025 10:42 pm

Dioptase View the latest post

There are no new unread posts for this topic. Thanks to Bill Hoeferi, I'm sharing this link

in Diamonds

Barbra Voltaire, FGG

0

238

Mon Mar 17, 2025 10:28 pm

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. GT Podicles - The New Era of Gemmology Today

in World Gem Foundation

GlobalTraveller007

0

2169

Thu Mar 06, 2025 2:08 pm

GlobalTraveller007 View the latest post

There are no new unread posts for this topic. The Art of Moissanite Cutting

in Diamonds

Azard_faza

0

2422

Wed Feb 26, 2025 5:01 am

Azard_faza View the latest post

There are no new unread posts for this topic. Attachment(s) Introductions

in Let's Introduce Ourselves!

Azard_faza

0

2865

Mon Dec 02, 2024 2:48 am

Azard_faza View the latest post

There are no new unread posts for this topic. Intermediate goldsmith and prospective faceter with no clue

in Beginners Only!

AtelierVLJ

0

622

Tue Nov 26, 2024 8:55 pm

AtelierVLJ View the latest post

There are no new unread posts for this topic. Cutting Oregon Sunstones: A Step-by-Step Guide

in Gemology Online Chats

Azard_faza

0

4558

Thu Nov 07, 2024 5:10 am

Azard_faza View the latest post

There are no new unread posts for this topic. Attachment(s) My third and final stone for identifying for now

in Gemology Online Chats

Jennie

0

4731

Tue Oct 29, 2024 6:54 am

Jennie View the latest post

There are no new unread posts for this topic. Attachment(s) Coming Soon! 5th Edition Printed Three-Volume Set

in Collecting Gem & Jewelry Books

GlobalTraveller007

0

2507

Sun Oct 13, 2024 12:43 pm

GlobalTraveller007 View the latest post

There are no new unread posts for this topic. Inside Out | Journey into the Center of a Gem: BILLY HUGHES

in Lotus Gemology

Barbra Voltaire, FGG

0

4311

Thu Oct 10, 2024 12:05 pm

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. Equipment advice…

in Beginners Only!

RickR134

0

1459

Mon Oct 07, 2024 6:42 pm

RickR134 View the latest post

There are no new unread posts for this topic. Attachment(s) Ugly stone from Madagascar

in Stone and Inclusion Photos

Curious-George

0

8841

Mon Oct 07, 2024 11:29 am

Curious-George View the latest post

There are no new unread posts for this topic. Attachment(s) Microscope

in Gem Equipment

Sparkles66

0

39931

Sun Aug 25, 2024 11:19 am

Sparkles66 View the latest post

There are no new unread posts for this topic. 2024 Baltimore Gem Mineral Fossil Show

in Upcoming Shows & Events

Teresa W

0

2198

Mon Jul 08, 2024 2:37 pm

Teresa W View the latest post

There are no new unread posts for this topic. Could these stones be nephrite Jade? How to know?

in Identification of Stones with Overlapping Characteristics

Greenbird

0

11984

Fri May 17, 2024 7:40 pm

Greenbird View the latest post

There are no new unread posts for this topic. DeFusco or Hans Sintered Lap?

in Lapidary Corner: Colored Stones

RandyB

0

4712

Sat Apr 27, 2024 8:58 am

RandyB View the latest post

There are no new unread posts for this topic. Attachment(s) Color changing garnet ?

in Colored Stones

Owlx

0

9879

Thu Feb 22, 2024 2:49 pm

Owlx View the latest post

There are no new unread posts for this topic. Attachment(s) Orangemonkie Foldio 360

in Stone and Inclusion Photos

chrisP

0

4293

Sun Jan 21, 2024 8:44 am

chrisP View the latest post

There are no new unread posts for this topic. Attachment(s) Interesting Stone/artifact

in Questions for the Experts

Dor

0

3378

Fri Dec 29, 2023 10:56 am

Dor View the latest post

There are no new unread posts for this topic. Out of Bankruptcy

in Employment Opportunities

Edward Bristol

0

19547

Fri Nov 17, 2023 1:52 am

Edward Bristol View the latest post

There are no new unread posts for this topic. IDEX Polished Price Index Hits Lowest Level Since 2008

in Diamonds

Barbra Voltaire, FGG

0

7140

Mon Sep 11, 2023 11:49 am

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. Flux melt red spinel

in Synthetics and Treatments

GlobalTraveller007

0

8839

Sun Aug 20, 2023 1:43 pm

GlobalTraveller007 View the latest post

There are no new unread posts for this topic. Attachment(s) A Brief History of the Zip Necklace

in Vintage & Antique Gemstones, Jewellery and Obects D'Art

Barbra Voltaire, FGG

0

18101

Thu Jul 27, 2023 12:04 pm

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. Attachment(s) China Crystalline Treasures Book

in Useful Links

danielle

0

27091

Wed Jul 12, 2023 5:01 am

danielle View the latest post

There are no new unread posts for this topic. Attachment(s) Nigerian Emeralds: Buyers Beware

in Synthetics and Treatments

Barbra Voltaire, FGG

0

6605

Mon Jul 03, 2023 10:25 pm

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. GemGenève May 11-14 2023

in Upcoming Shows & Events

Dioptase

0

7899

Thu May 04, 2023 10:49 pm

Dioptase View the latest post

There are no new unread posts for this topic. Grade and Rate Diamond Transparency

in GIA (Gemological Institute of America)

G Holloway Cut Nut

0

18177

Wed Apr 12, 2023 9:20 pm

G Holloway Cut Nut View the latest post

There are no new unread posts for this topic. Attachment(s) Facet design called "Robin"

in Lapidary Corner: Colored Stones

salik

0

9670

Wed Mar 01, 2023 5:31 am

salik View the latest post

There are no new unread posts for this topic. Attachment(s) Displacement After Earthquake in Turkey

in General Discussions

Barbra Voltaire, FGG

0

18410

Thu Feb 16, 2023 3:16 pm

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. 2023 Tucson Gem Mineral Show

in TUCSON GEM SHOWS 2022-2025 SPECIAL SECTION

Greenspinel

0

17791

Tue Jan 10, 2023 6:35 pm

Greenspinel View the latest post

There are no new unread posts for this topic. Attachment(s) GIA Teams with Alan Revere to Revamp Graduate Jeweler Class

in Jeweler's Bench

Barbra Voltaire, FGG

0

18373

Wed Dec 28, 2022 2:41 pm

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. Attachment(s) An Update on Sapphires with Unstable Color

in Colored Stones

Barbra Voltaire, FGG

0

10380

Wed Dec 28, 2022 2:24 pm

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. CIBJO's Guide for Natural and Cultured Pearls

in Organic Gems

Barbra Voltaire, FGG

0

32432

Sat Dec 03, 2022 1:22 pm

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. Attachment(s) DeBeers Now Offers Diamond Grading

in Diamonds

Barbra Voltaire, FGG

0

11051

Wed Nov 30, 2022 1:05 pm

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. Attachment(s) Facets Sri Lanka Gem and Jewelry show 2023

in Upcoming Shows & Events

crescentgems

0

12916

Thu Nov 17, 2022 10:44 am

crescentgems View the latest post

There are no new unread posts for this topic. Attachment(s) Diamond mining results in environmental disaster

in Diamonds

Barbra Voltaire, FGG

0

11261

Thu Nov 03, 2022 12:21 pm

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. Imperial by Gem Instruments Faceting Machine

in Lapidary Corner: Colored Stones

glhays

0

14044

Mon Oct 31, 2022 4:58 pm

glhays View the latest post

There are no new unread posts for this topic. My design book, The Secret Teachings, back in stock

in Lapidary Corner: Colored Stones

justinkprim

0

12904

Thu Sep 22, 2022 10:04 am

justinkprim View the latest post

There are no new unread posts for this topic. Looking for Lee index

in Lapidary Corner: Colored Stones

fedathc

0

13165

Mon Sep 19, 2022 9:03 pm

fedathc View the latest post

There are no new unread posts for this topic. Labor Day Well Wishes to all!

in Upcoming Shows & Events

glhays

0

16942

Mon Sep 05, 2022 12:20 am

glhays View the latest post

There are no new unread posts for this topic. USPAP Extended until December 31, 2023

in Appraiser's Corner

Barbra Voltaire, FGG

0

30412

Thu Aug 11, 2022 9:05 pm

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. Diamond Grading Lab NY

in GIA (Gemological Institute of America)

Sparkles66

0

23871

Fri Jul 15, 2022 6:26 am

Sparkles66 View the latest post

There are no new unread posts for this topic. Gem Intro

in Gem-A (The Gemmological Association of Great Britain)

Barbra Voltaire, FGG

0

52316

Thu Jul 07, 2022 11:05 am

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. araiba like tourmaline, a misbegotten variety.

in Gems' Color

bruce_tourm

0

34194

Mon Jul 04, 2022 6:46 am

bruce_tourm View the latest post

There are no new unread posts for this topic. autoclave to age baltic amber

in Colored Stones

carver

0

16696

Mon Jul 04, 2022 3:36 am

carver View the latest post

There are no new unread posts for this topic. CASTING DOUBT: METAL CASTING IN THE ANCIENT WORLD

in Vintage & Antique Gemstones, Jewellery and Obects D'Art

Barbra Voltaire, FGG

0

33722

Sun May 22, 2022 10:59 pm

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. Attachment(s) Asking your Opinion

in Vintage & Antique Gemstones, Jewellery and Obects D'Art

Anabell

0

33863

Fri May 20, 2022 12:26 pm

Anabell View the latest post

There are no new unread posts for this topic. Tips on FGA exam

in Gem-A (The Gemmological Association of Great Britain)

Leel

0

33685

Thu May 05, 2022 11:32 am

Leel View the latest post

There are no new unread posts for this topic. Attachment(s) Eighteenth Annual Sinkankas Symposium

in Upcoming Shows & Events

Barbra Voltaire, FGG

0

18110

Fri Apr 22, 2022 9:25 pm

Barbra Voltaire, FGG View the latest post

There are no new unread posts for this topic. Indicolite Mysteries!

in Beginners Only!

Shifter55

0

18544

Thu Apr 14, 2022 4:44 am

Shifter55 View the latest post

Display posts from previous:  Sort by:  
Page 1 of 20 [ Search found more than 1000 matches ]
Go to page 1, 2, 3, 4, 5 ... 20  Next


Board index

All times are UTC - 4 hours


Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Gemology Style ported to phpBB3 by Christian Bullock