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A Review of Analytical Methods Used in Origin Determination

Last post by Barbra Voltaire, FGG « Wed Feb 26, 2020 9:46 pm
Posted in GIA Current Research

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:46 pm » in GIA Current Research

0 Replies

4961 Views

Last post by Barbra Voltaire, FGG
Wed Feb 26, 2020 9:46 pm
Geographic Origin Determination of Alexandrite

Last post by Barbra Voltaire, FGG « Wed Feb 26, 2020 9:45 pm
Posted in GIA Current Research

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:45 pm » in GIA Current Research

0 Replies

4623 Views

Last post by Barbra Voltaire, FGG
Wed Feb 26, 2020 9:45 pm
Emerald: Geopgraphic Origin Determination

Last post by Barbra Voltaire, FGG « Wed Feb 26, 2020 9:43 pm
Posted in GIA Current Research

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:43 pm » in GIA Current Research

0 Replies

4489 Views

Last post by Barbra Voltaire, FGG
Wed Feb 26, 2020 9:43 pm
Geographic Origin Determinatoio of Ruby

Last post by Barbra Voltaire, FGG « Wed Feb 26, 2020 9:41 pm
Posted in GIA Current Research

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:41 pm » in GIA Current Research

0 Replies

4541 Views

Last post by Barbra Voltaire, FGG
Wed Feb 26, 2020 9:41 pm
Research Collections and the Development of Gem Deposits

Last post by Barbra Voltaire, FGG « Wed Feb 26, 2020 9:35 pm
Posted in GIA Current Research

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:35 pm » in GIA Current Research

0 Replies

4430 Views

Last post by Barbra Voltaire, FGG
Wed Feb 26, 2020 9:35 pm
Blue Sapphire Geographic Origin Determination

Last post by Barbra Voltaire, FGG « Wed Feb 26, 2020 9:34 pm
Posted in GIA Current Research

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:34 pm » in GIA Current Research

0 Replies

4613 Views

Last post by Barbra Voltaire, FGG
Wed Feb 26, 2020 9:34 pm
INCLUSIONS IN NATURAL, TREATED, SYNTHETIC,AND IMITATION OPAL

Last post by Barbra Voltaire, FGG « Wed Feb 26, 2020 9:29 pm
Posted in GIA Current Research

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:29 pm » in GIA Current Research

0 Replies

4539 Views

Last post by Barbra Voltaire, FGG
Wed Feb 26, 2020 9:29 pm
Geographic Origin Dilemma

Last post by Barbra Voltaire, FGG « Wed Feb 26, 2020 9:23 pm
Posted in GIA Current Research

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:23 pm » in GIA Current Research

0 Replies

4423 Views

Last post by Barbra Voltaire, FGG
Wed Feb 26, 2020 9:23 pm
2020 Owyhee Gem and Mineral Society Show, Caldwell, Idaho

Last post by abeck « Wed Feb 19, 2020 11:37 am
Posted in Upcoming Shows & Events

by abeck » Wed Feb 19, 2020 11:37 am » in Upcoming Shows & Events

0 Replies

9142 Views

Last post by abeck
Wed Feb 19, 2020 11:37 am
2020 Idaho Gem Club show, Boise Idaho!

Last post by abeck « Wed Feb 19, 2020 11:25 am
Posted in Upcoming Shows & Events

by abeck » Wed Feb 19, 2020 11:25 am » in Upcoming Shows & Events

0 Replies

7410 Views

Last post by abeck
Wed Feb 19, 2020 11:25 am
The photo Ural Amethyst ( Vatiha mined)

Last post by UralEmerald « Tue Feb 18, 2020 8:12 am
Posted in Photography & Photomicrography

by UralEmerald » Tue Feb 18, 2020 8:12 am » in Photography & Photomicrography

0 Replies

6968 Views

Last post by UralEmerald
Tue Feb 18, 2020 8:12 am
GIA Scholarships: Apply Now!

Last post by Barbra Voltaire, FGG « Tue Feb 11, 2020 4:44 pm
Posted in GIA (Gemological Institute of America)

by Barbra Voltaire, FGG » Tue Feb 11, 2020 4:44 pm » in GIA (Gemological Institute of America)

0 Replies

6151 Views

Last post by Barbra Voltaire, FGG
Tue Feb 11, 2020 4:44 pm
The analysis of natural vs synthetic gemstones

Last post by Barbra Voltaire, FGG « Fri Jan 24, 2020 9:21 pm
Posted in Synthetics and Treatments

by Barbra Voltaire, FGG » Fri Jan 24, 2020 9:21 pm » in Synthetics and Treatments

0 Replies

16177 Views

Last post by Barbra Voltaire, FGG
Fri Jan 24, 2020 9:21 pm
Easy Cheap DIY DSLR adapter for Leica trinocular stereos S6d

Last post by Stephen Challener « Fri Jan 24, 2020 1:57 am
Posted in Gem Equipment

by Stephen Challener » Fri Jan 24, 2020 1:57 am » in Gem Equipment

0 Replies

2935 Views

Last post by Stephen Challener
Fri Jan 24, 2020 1:57 am
Hans Meevis on Purple Gold

Last post by Barbra Voltaire, FGG « Tue Jan 21, 2020 11:20 pm
Posted in Jeweler's Bench

by Barbra Voltaire, FGG » Tue Jan 21, 2020 11:20 pm » in Jeweler's Bench

0 Replies

5037 Views

Last post by Barbra Voltaire, FGG
Tue Jan 21, 2020 11:20 pm
Mysteries of the World's Rarest Gems from Multicolour

Last post by Barbra Voltaire, FGG « Sat Jan 18, 2020 12:38 pm
Posted in Gemological Articles

by Barbra Voltaire, FGG » Sat Jan 18, 2020 12:38 pm » in Gemological Articles

0 Replies

5054 Views

Last post by Barbra Voltaire, FGG
Sat Jan 18, 2020 12:38 pm
An article about Ruby Stone Luc Yen Vietnam

Last post by hathien1102 « Sat Jan 11, 2020 1:58 am
Posted in Useful Links

by hathien1102 » Sat Jan 11, 2020 1:58 am » in Useful Links

0 Replies

10814 Views

Last post by hathien1102
Sat Jan 11, 2020 1:58 am
2020 Educating Artisanal Miners of East Africa

Last post by Barbra Voltaire, FGG « Wed Jan 08, 2020 1:22 pm
Posted in Tuscon Gem Shows in Years Past

by Barbra Voltaire, FGG » Wed Jan 08, 2020 1:22 pm » in Tuscon Gem Shows in Years Past

0 Replies

4949 Views

Last post by Barbra Voltaire, FGG
Wed Jan 08, 2020 1:22 pm
Calculator for gemological and jewelry tasks

Last post by Barbra Voltaire, FGG « Tue Jan 07, 2020 4:22 pm
Posted in Appraiser's Corner

by Barbra Voltaire, FGG » Tue Jan 07, 2020 4:22 pm » in Appraiser's Corner

0 Replies

5514 Views

Last post by Barbra Voltaire, FGG
Tue Jan 07, 2020 4:22 pm
Pink sapphire question

Last post by Debbie K « Thu Dec 26, 2019 10:41 pm
Posted in Colored Stones

by Debbie K » Thu Dec 26, 2019 10:41 pm » in Colored Stones

0 Replies

1490 Views

Last post by Debbie K
Thu Dec 26, 2019 10:41 pm
NEW FOR NAJA! ONLINE APPRAISAL STUDIES COURSE

Last post by Barbra Voltaire, FGG « Thu Dec 26, 2019 1:31 pm
Posted in Appraiser's Corner

by Barbra Voltaire, FGG » Thu Dec 26, 2019 1:31 pm » in Appraiser's Corner

0 Replies

8472 Views

Last post by Barbra Voltaire, FGG
Thu Dec 26, 2019 1:31 pm
Please Help Identify the Stone in this Ring

Last post by blueribbonrarities « Tue Dec 17, 2019 6:48 pm
Posted in CSI: Colored Stone Identification

by blueribbonrarities » Tue Dec 17, 2019 6:48 pm » in CSI: Colored Stone Identification

0 Replies

3284 Views

Last post by blueribbonrarities
Tue Dec 17, 2019 6:48 pm
GSA & Zeiss offer scholarship for Microscopic Researh

Last post by Barbra Voltaire, FGG « Mon Dec 16, 2019 2:14 pm
Posted in Employment Opportunities

by Barbra Voltaire, FGG » Mon Dec 16, 2019 2:14 pm » in Employment Opportunities

0 Replies

20759 Views

Last post by Barbra Voltaire, FGG
Mon Dec 16, 2019 2:14 pm
Starting your own inventory

Last post by thomas.gonzalez228 « Sat Dec 14, 2019 11:13 pm
Posted in Beginners Only!

by thomas.gonzalez228 » Sat Dec 14, 2019 11:13 pm » in Beginners Only!

0 Replies

2344 Views

Last post by thomas.gonzalez228
Sat Dec 14, 2019 11:13 pm
Lice-Filled Dinosaur Feathers Found Trapped in Amber

Last post by Barbra Voltaire, FGG « Wed Dec 11, 2019 12:51 pm
Posted in Organic Gems

by Barbra Voltaire, FGG » Wed Dec 11, 2019 12:51 pm » in Organic Gems

0 Replies

10721 Views

Last post by Barbra Voltaire, FGG
Wed Dec 11, 2019 12:51 pm
Hand facetor with cam built into it.

Last post by 14megapixel « Wed Dec 04, 2019 2:27 pm
Posted in Lapidary Corner: Colored Stones

by 14megapixel » Wed Dec 04, 2019 2:27 pm » in Lapidary Corner: Colored Stones

0 Replies

1972 Views

Last post by 14megapixel
Wed Dec 04, 2019 2:27 pm
NOVA Documentary - Treasures of the Earth - GEMS

Last post by Barbra Voltaire, FGG « Sat Nov 30, 2019 2:11 pm
Posted in Tutoring Sessions for Gemology Students and Enthusiasts

by Barbra Voltaire, FGG » Sat Nov 30, 2019 2:11 pm » in Tutoring Sessions for Gemology Students and Enthusiasts

0 Replies

12636 Views

Last post by Barbra Voltaire, FGG
Sat Nov 30, 2019 2:11 pm
Better refractometer results with the Bright Line technique

Last post by Barbra Voltaire, FGG « Sat Nov 30, 2019 1:16 pm
Posted in SGL: Stone Group Labs

by Barbra Voltaire, FGG » Sat Nov 30, 2019 1:16 pm » in SGL: Stone Group Labs

0 Replies

75735 Views

Last post by Barbra Voltaire, FGG
Sat Nov 30, 2019 1:16 pm
Robert Weldon to Receive the 2020 Antonio C. Bonanno Award

Last post by Barbra Voltaire, FGG « Mon Nov 25, 2019 6:03 pm
Posted in Appraiser's Corner

by Barbra Voltaire, FGG » Mon Nov 25, 2019 6:03 pm » in Appraiser's Corner

0 Replies

5907 Views

Last post by Barbra Voltaire, FGG
Mon Nov 25, 2019 6:03 pm
Fluorescence in Star Ruby and Ruby-indicators of synthetic

Last post by tinkie « Sat Nov 23, 2019 3:41 am
Posted in Beginners Only!

by tinkie » Sat Nov 23, 2019 3:41 am » in Beginners Only!

0 Replies

1693 Views

Last post by tinkie
Sat Nov 23, 2019 3:41 am
The Power of Gemcutting talk

Last post by justinkprim « Wed Nov 20, 2019 7:21 am
Posted in Lapidary Corner: Colored Stones

by justinkprim » Wed Nov 20, 2019 7:21 am » in Lapidary Corner: Colored Stones

0 Replies

1556 Views

Last post by justinkprim
Wed Nov 20, 2019 7:21 am
Another one bites the dust

Last post by Barbra Voltaire, FGG « Sat Nov 09, 2019 12:37 pm
Posted in Appraiser's Corner

by Barbra Voltaire, FGG » Sat Nov 09, 2019 12:37 pm » in Appraiser's Corner

0 Replies

5493 Views

Last post by Barbra Voltaire, FGG
Sat Nov 09, 2019 12:37 pm
De Beers Slashes Output Amid Diamond Glut

Last post by Barbra Voltaire, FGG « Fri Nov 01, 2019 2:41 pm
Posted in Diamonds

by Barbra Voltaire, FGG » Fri Nov 01, 2019 2:41 pm » in Diamonds

0 Replies

12890 Views

Last post by Barbra Voltaire, FGG
Fri Nov 01, 2019 2:41 pm
Raw opals from Ethiopia/ Post pic test

Last post by KJEmerald/Amethyst « Fri Oct 25, 2019 10:07 am
Posted in Photography & Photomicrography

by KJEmerald/Amethyst » Fri Oct 25, 2019 10:07 am » in Photography & Photomicrography

0 Replies

16874 Views

Last post by KJEmerald/Amethyst
Fri Oct 25, 2019 10:07 am
CIBJO releases Gemmological Special Report

Last post by Barbra Voltaire, FGG « Wed Oct 23, 2019 11:22 am
Posted in CIBJO (Confédération International pour la Bijouterie, Joaillerie)

by Barbra Voltaire, FGG » Wed Oct 23, 2019 11:22 am » in CIBJO (Confédération International pour la Bijouterie, Joaillerie)

0 Replies

25394 Views

Last post by Barbra Voltaire, FGG
Wed Oct 23, 2019 11:22 am
Munichshow 2019 25.10-27.10.

Last post by arglthesheep « Wed Oct 16, 2019 1:11 am
Posted in Upcoming Shows & Events

by arglthesheep » Wed Oct 16, 2019 1:11 am » in Upcoming Shows & Events

0 Replies

13728 Views

Last post by arglthesheep
Wed Oct 16, 2019 1:11 am
Facette Maintenance Kit

Last post by stevesgems « Fri Oct 11, 2019 1:55 am
Posted in Lapidary Corner: Colored Stones

by stevesgems » Fri Oct 11, 2019 1:55 am » in Lapidary Corner: Colored Stones

0 Replies

9945 Views

Last post by stevesgems
Fri Oct 11, 2019 1:55 am
Pearl and gems Phu quoc

Last post by Doffemannen « Fri Oct 04, 2019 4:00 pm
Posted in Field Trips for Gem Hunters

by Doffemannen » Fri Oct 04, 2019 4:00 pm » in Field Trips for Gem Hunters

0 Replies

20558 Views

Last post by Doffemannen
Fri Oct 04, 2019 4:00 pm
A DIY Wild M400 / M420 Macroscope

Last post by Stephen Challener « Thu Oct 03, 2019 8:21 pm
Posted in Gem Equipment

by Stephen Challener » Thu Oct 03, 2019 8:21 pm » in Gem Equipment

0 Replies

11118 Views

Last post by Stephen Challener
Thu Oct 03, 2019 8:21 pm
Pandimonium diastick with crystalite crystalube oil

Last post by 14megapixel « Wed Sep 25, 2019 6:50 am
Posted in Lapidary Corner: Colored Stones

by 14megapixel » Wed Sep 25, 2019 6:50 am » in Lapidary Corner: Colored Stones

0 Replies

10163 Views

Last post by 14megapixel
Wed Sep 25, 2019 6:50 am
Brucite

Last post by pezzottait « Tue Aug 27, 2019 12:14 pm
Posted in Colored Stones

by pezzottait » Tue Aug 27, 2019 12:14 pm » in Colored Stones

0 Replies

9838 Views

Last post by pezzottait
Tue Aug 27, 2019 12:14 pm
Deep earth diamonds

Last post by johngemo « Fri Aug 23, 2019 7:46 am
Posted in Diamonds

by johngemo » Fri Aug 23, 2019 7:46 am » in Diamonds

0 Replies

17241 Views

Last post by johngemo
Fri Aug 23, 2019 7:46 am
Denver Gem Show Question

Last post by VanGem « Thu Aug 22, 2019 5:19 am
Posted in Upcoming Shows & Events

by VanGem » Thu Aug 22, 2019 5:19 am » in Upcoming Shows & Events

0 Replies

13568 Views

Last post by VanGem
Thu Aug 22, 2019 5:19 am
Irradiation of Pink Tourmaline

Last post by stmor « Tue Aug 20, 2019 7:57 am
Posted in Colored Stones

by stmor » Tue Aug 20, 2019 7:57 am » in Colored Stones

0 Replies

10137 Views

Last post by stmor
Tue Aug 20, 2019 7:57 am
Gem Class For Kids

Last post by VanGem « Fri Aug 16, 2019 1:20 am
Posted in Beginners Only!

by VanGem » Fri Aug 16, 2019 1:20 am » in Beginners Only!

0 Replies

9662 Views

Last post by VanGem
Fri Aug 16, 2019 1:20 am
Defective Hartridge reversion spectroscope - help needed

Last post by knumo « Wed Aug 07, 2019 8:10 am
Posted in Gem Equipment

by knumo » Wed Aug 07, 2019 8:10 am » in Gem Equipment

0 Replies

9654 Views

Last post by knumo
Wed Aug 07, 2019 8:10 am
International Appraisers Conference in New York City

Last post by gembuddy « Mon Jul 29, 2019 2:03 pm
Posted in Appraiser's Corner

by gembuddy » Mon Jul 29, 2019 2:03 pm » in Appraiser's Corner

0 Replies

16816 Views

Last post by gembuddy
Mon Jul 29, 2019 2:03 pm
Bank Suspends Credit for ‘Unprofitable’ Rough Diamonds

Last post by Barbra Voltaire, FGG « Thu Jul 25, 2019 8:09 pm
Posted in Diamonds

by Barbra Voltaire, FGG » Thu Jul 25, 2019 8:09 pm » in Diamonds

0 Replies

10529 Views

Last post by Barbra Voltaire, FGG
Thu Jul 25, 2019 8:09 pm
First Grandiderite

Last post by nickatnight « Wed Jul 24, 2019 4:59 am
Posted in Beginners Only!

by nickatnight » Wed Jul 24, 2019 4:59 am » in Beginners Only!

0 Replies

9579 Views

Last post by nickatnight
Wed Jul 24, 2019 4:59 am
rayner refractometer

Last post by arglthesheep « Mon Jul 22, 2019 1:17 am
Posted in Gem Equipment

by arglthesheep » Mon Jul 22, 2019 1:17 am » in Gem Equipment

0 Replies

9875 Views

Last post by arglthesheep
Mon Jul 22, 2019 1:17 am

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