Gemological Articles

Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto

New Topic

80 topics

Topics

Replies

Views

Last post

AI in Gemology! Innovations or Concerns?

Last post by S. Rautiainen « Tue May 07, 2024 9:07 am
Replies: 1
by roshanravan » Fri Apr 12, 2024 10:19 pm

1 Replies

36723 Views

Last post by S. Rautiainen
Tue May 07, 2024 9:07 am
IGR: An Editorial: Do it yourself gemstone graders

Last post by glhays « Thu Sep 02, 2021 5:03 pm
Replies: 5
by Barbra Voltaire, FGG » Thu Sep 02, 2021 12:35 pm

5 Replies

59816 Views

Last post by glhays
Thu Sep 02, 2021 5:03 pm
Technological Transformation of the Coloured Stone Industry

Last post by Barbra Voltaire, FGG « Sun Dec 20, 2020 4:29 pm

by Barbra Voltaire, FGG » Sun Dec 20, 2020 4:29 pm

0 Replies

59249 Views

Last post by Barbra Voltaire, FGG
Sun Dec 20, 2020 4:29 pm
Discussion

Last post by glhays « Mon Oct 12, 2020 1:46 pm
Replies: 12
by navneetagarwal » Thu Oct 08, 2020 1:16 am

12 Replies

61923 Views

Last post by glhays
Mon Oct 12, 2020 1:46 pm
Article

Last post by glhays « Sat Oct 03, 2020 5:38 pm
Replies: 4
by navneetagarwal » Wed Sep 30, 2020 7:20 am

4 Replies

46424 Views

Last post by glhays
Sat Oct 03, 2020 5:38 pm
Origins of Gemology in Pictures by Joseph Gill

Last post by 1bwana1 « Sun Mar 15, 2020 1:26 pm
Replies: 1
by Barbra Voltaire, FGG » Sun Mar 15, 2020 12:34 pm

1 Replies

22890 Views

Last post by 1bwana1
Sun Mar 15, 2020 1:26 pm
Gem Lab Teaching destructive testing

Last post by Barbra Voltaire, FGG « Mon Feb 03, 2020 1:12 pm
Replies: 1
by 1bwana1 » Mon Feb 03, 2020 2:46 am

1 Replies

8670 Views

Last post by Barbra Voltaire, FGG
Mon Feb 03, 2020 1:12 pm
Mysteries of the World's Rarest Gems from Multicolour

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

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

0 Replies

7838 Views

Last post by Barbra Voltaire, FGG
Sat Jan 18, 2020 12:38 pm
ICA Incolor magazine about spinel

Last post by OliVDB5590 « Wed Nov 27, 2019 10:31 am
Replies: 2
by Dioptase » Wed Nov 06, 2019 4:29 am

2 Replies

8441 Views

Last post by OliVDB5590
Wed Nov 27, 2019 10:31 am
Looking for literatur about tenebrescence

Last post by pezzottait « Sat Oct 26, 2019 1:02 pm
Replies: 2
by pezzottait » Sat Oct 26, 2019 11:07 am

2 Replies

12136 Views

Last post by pezzottait
Sat Oct 26, 2019 1:02 pm
Vanadium Bearing Tourmaline, Nadonjukin, Tanzania

Last post by Stephen Challener « Mon Jul 01, 2019 5:38 pm
Replies: 1
by Barbra Voltaire, FGG » Mon Jul 01, 2019 2:01 pm

1 Replies

9824 Views

Last post by Stephen Challener
Mon Jul 01, 2019 5:38 pm
Exceptional-Quality “MUSGRAVITE”

Last post by Barbra Voltaire, FGG « Tue Apr 09, 2019 1:53 pm

by Barbra Voltaire, FGG » Tue Apr 09, 2019 1:53 pm

0 Replies

11059 Views

Last post by Barbra Voltaire, FGG
Tue Apr 09, 2019 1:53 pm
Gem Abstracts from the Swiss Geoscience Meeting

Last post by Barbra Voltaire, FGG « Tue Apr 09, 2019 1:04 pm

by Barbra Voltaire, FGG » Tue Apr 09, 2019 1:04 pm

0 Replies

10955 Views

Last post by Barbra Voltaire, FGG
Tue Apr 09, 2019 1:04 pm
Fluorescence and Fancy Color Diamonds

Last post by dchallener « Tue Dec 11, 2018 11:01 pm
Replies: 1
by Barbra Voltaire, FGG » Tue Dec 11, 2018 7:49 pm

1 Replies

9530 Views

Last post by dchallener
Tue Dec 11, 2018 11:01 pm
Microworld of Gems: New Sunstone from North Carolina

Last post by Stephen Challener « Fri Nov 02, 2018 3:25 pm
Replies: 3
by Stephen Challener » Wed Feb 07, 2018 5:42 pm

3 Replies

14034 Views

Last post by Stephen Challener
Fri Nov 02, 2018 3:25 pm
Lapidary Technology Through the Ages: Laps and Polish

Last post by justinkprim « Sun Oct 07, 2018 8:46 pm
Replies: 2
by justinkprim » Sun Oct 07, 2018 9:34 am

2 Replies

9980 Views

Last post by justinkprim
Sun Oct 07, 2018 8:46 pm
Gems&Gemology and Journal of Gemmology Downloads

Last post by Jason Barrett « Sat Sep 29, 2018 5:17 pm
Replies: 2
by Barbra Voltaire, FGG » Sat Aug 25, 2018 12:21 pm

2 Replies

10764 Views

Last post by Jason Barrett
Sat Sep 29, 2018 5:17 pm
Article on Photoluminescence

Last post by Alberto « Mon Feb 26, 2018 7:40 am
Replies: 2
by Alberto » Sun Feb 25, 2018 2:42 pm

2 Replies

12859 Views

Last post by Alberto
Mon Feb 26, 2018 7:40 am
Rivista Italiana di Gemmologia #2: English - September 2017

Last post by Barbra Voltaire, FGG « Mon Oct 16, 2017 11:54 am

by Barbra Voltaire, FGG » Mon Oct 16, 2017 11:54 am

0 Replies

13269 Views

Last post by Barbra Voltaire, FGG
Mon Oct 16, 2017 11:54 am
New Microworld of Sapphires Chart Available in G&G

Last post by Nathan Renfro « Thu Oct 05, 2017 8:33 pm
Replies: 2
by Nathan Renfro » Thu Sep 14, 2017 8:13 pm

2 Replies

13630 Views

Last post by Nathan Renfro
Thu Oct 05, 2017 8:33 pm
Spectroscopy article from RIG

Last post by Alberto « Tue Oct 03, 2017 3:07 am

by Alberto » Tue Oct 03, 2017 3:07 am

0 Replies

13033 Views

Last post by Alberto
Tue Oct 03, 2017 3:07 am
Rivista Italiana di gemmologia English version

Last post by Alberto « Wed Sep 27, 2017 12:10 pm
Replies: 4
by Alberto » Thu Jun 01, 2017 11:44 am

4 Replies

14320 Views

Last post by Alberto
Wed Sep 27, 2017 12:10 pm
Rivista Italiana di Gemmologia

Last post by Tom Herman « Fri Jan 27, 2017 12:09 pm
Replies: 3
by Alberto » Thu Jan 26, 2017 4:10 am

3 Replies

14092 Views

Last post by Tom Herman
Fri Jan 27, 2017 12:09 pm
Ruby & Sapphire new edition!!!!

Last post by Lefty « Fri Oct 28, 2016 6:18 pm
Replies: 3
by Alberto » Wed Oct 26, 2016 8:06 am

3 Replies

12924 Views

Last post by Lefty
Fri Oct 28, 2016 6:18 pm
Trasparenze magazine

Last post by Barbra Voltaire, FGG « Fri Aug 12, 2016 1:05 pm
Replies: 9
by Alberto » Thu Aug 04, 2016 3:05 am

9 Replies

12635 Views

Last post by Barbra Voltaire, FGG
Fri Aug 12, 2016 1:05 pm
An overview of tourmaline mineralogy......

Last post by Barbra Voltaire, FGG « Sat Apr 09, 2016 5:46 pm

by Barbra Voltaire, FGG » Sat Apr 09, 2016 5:46 pm

0 Replies

8297 Views

Last post by Barbra Voltaire, FGG
Sat Apr 09, 2016 5:46 pm
American Rockhound

Last post by Barbra Voltaire, FGG « Mon Feb 22, 2016 10:38 pm

by Barbra Voltaire, FGG » Mon Feb 22, 2016 10:38 pm

0 Replies

8426 Views

Last post by Barbra Voltaire, FGG
Mon Feb 22, 2016 10:38 pm
Elise Skalwold: Important Articles

Last post by G4Lab « Wed Jan 06, 2016 7:36 pm
Replies: 14
by Barbra Voltaire, FGG » Sun Dec 27, 2015 4:19 pm

14 Replies

13929 Views

Last post by G4Lab
Wed Jan 06, 2016 7:36 pm
Faturan Amber (bakelite or catalin?)

Last post by Barbra Voltaire, FGG « Mon Jan 04, 2016 1:56 pm
Replies: 2
by roshanravan » Sun Jan 03, 2016 3:28 pm

2 Replies

16321 Views

Last post by Barbra Voltaire, FGG
Mon Jan 04, 2016 1:56 pm
Russian Demantoid - Heat treatment

Last post by Marlow « Sun Jan 03, 2016 4:08 pm
Replies: 2
by Marlow » Sun Jan 03, 2016 10:22 am

2 Replies

9150 Views

Last post by Marlow
Sun Jan 03, 2016 4:08 pm
An interesting article on gem I.D. using photoluminescence

Last post by Brian « Thu Jul 23, 2015 6:14 pm
Replies: 1
by michael_e » Thu Jul 23, 2015 1:29 pm

1 Replies

8745 Views

Last post by Brian
Thu Jul 23, 2015 6:14 pm
Gemstones Of East Africa

Last post by Barbra Voltaire, FGG « Mon Jul 20, 2015 12:00 am
Replies: 3
by Jason Barrett » Fri Jul 17, 2015 11:46 pm

3 Replies

9537 Views

Last post by Barbra Voltaire, FGG
Mon Jul 20, 2015 12:00 am
Synthetic HOC-Grown Russian Alexandrite

Last post by Marlow « Thu Mar 05, 2015 12:39 am
Replies: 2
by Elena Andia » Sun Feb 22, 2015 10:32 am

2 Replies

9472 Views

Last post by Marlow
Thu Mar 05, 2015 12:39 am
Treated and synthetic diamonds in melee diamond parcels

Last post by Elena Andia « Tue Feb 24, 2015 5:32 pm
Replies: 2
by Elena Andia » Tue Feb 24, 2015 11:12 am

2 Replies

8962 Views

Last post by Elena Andia
Tue Feb 24, 2015 5:32 pm
Gem Diamonds. Causes of Colors

Last post by Elena Andia « Sun Feb 22, 2015 7:17 pm

by Elena Andia » Sun Feb 22, 2015 7:17 pm

0 Replies

10443 Views

Last post by Elena Andia
Sun Feb 22, 2015 7:17 pm
Another Tanzanite Treatment

Last post by Elena Andia « Sun Feb 22, 2015 10:24 am
Replies: 3
by Barbara O. Ellis » Tue Mar 18, 2014 1:11 pm

3 Replies

10156 Views

Last post by Elena Andia
Sun Feb 22, 2015 10:24 am
Another Astounding Contribution from Joseph Gill!

Last post by Barbra Voltaire, FGG « Fri Feb 20, 2015 1:39 am
Replies: 21
by Barbra Voltaire, FGG » Sun Mar 09, 2014 12:08 am
1

2
21 Replies

21277 Views

Last post by Barbra Voltaire, FGG
Fri Feb 20, 2015 1:39 am
Smoke Treatment of Welo Opals by Bear and Cara Williams

Last post by Cara Williams « Wed Oct 15, 2014 3:32 pm
Replies: 1
by Barbra Voltaire, FGG » Tue Jul 08, 2014 2:10 pm

1 Replies

15733 Views

Last post by Cara Williams
Wed Oct 15, 2014 3:32 pm
Thirsty?

Last post by Alberto « Fri Mar 14, 2014 10:59 am
Replies: 2
by John Fitzgerald » Thu Mar 13, 2014 5:09 pm

2 Replies

9771 Views

Last post by Alberto
Fri Mar 14, 2014 10:59 am
Zircon xtl oldest known piece of Earth!

Last post by Ux4 « Mon Feb 24, 2014 8:29 pm

by Ux4 » Mon Feb 24, 2014 8:29 pm

0 Replies

8754 Views

Last post by Ux4
Mon Feb 24, 2014 8:29 pm
Tanzanite: Facts Fears and Fakes

Last post by danielle « Fri Jul 26, 2013 6:01 am
Replies: 1
by Barbra Voltaire, FGG » Mon Jul 15, 2013 11:50 pm

1 Replies

9947 Views

Last post by danielle
Fri Jul 26, 2013 6:01 am
35 Takeaways From the JCK Las Vegas Speeches & Seminars

Last post by Barbra Voltaire, FGG « Wed Jul 24, 2013 2:13 pm

by Barbra Voltaire, FGG » Wed Jul 24, 2013 2:13 pm

0 Replies

9288 Views

Last post by Barbra Voltaire, FGG
Wed Jul 24, 2013 2:13 pm
Gemstones of western Australia

Last post by Tim « Tue Feb 26, 2013 6:08 am
Replies: 1
by Alberto » Mon Feb 25, 2013 4:27 pm

1 Replies

9851 Views

Last post by Tim
Tue Feb 26, 2013 6:08 am
GIT 2012 abstract released

Last post by HHelton « Thu Jan 17, 2013 1:34 pm
Replies: 1
by Alberto » Thu Jan 17, 2013 11:22 am

1 Replies

9384 Views

Last post by HHelton
Thu Jan 17, 2013 1:34 pm
Dom Pedro Aquamarine at Smithsonian

Last post by Barbara O. Ellis « Mon Dec 03, 2012 5:51 pm
Replies: 2
by empress » Mon Dec 03, 2012 10:39 am

2 Replies

9745 Views

Last post by Barbara O. Ellis
Mon Dec 03, 2012 5:51 pm
Online Gemological search engine

Last post by zen « Tue Aug 28, 2012 4:47 am

by zen » Tue Aug 28, 2012 4:47 am

0 Replies

9529 Views

Last post by zen
Tue Aug 28, 2012 4:47 am
InColor Addresses Origin of Gems

Last post by Barbra Voltaire, FGG « Fri Jul 06, 2012 10:03 am

by Barbra Voltaire, FGG » Fri Jul 06, 2012 10:03 am

0 Replies

9101 Views

Last post by Barbra Voltaire, FGG
Fri Jul 06, 2012 10:03 am
Vietnamese Spinel

Last post by danielle « Fri Jun 01, 2012 5:25 am
Replies: 3
by Jason » Thu May 17, 2012 12:59 pm

3 Replies

10783 Views

Last post by danielle
Fri Jun 01, 2012 5:25 am
Bugger !

Last post by Conny Forsberg « Tue May 22, 2012 4:29 pm
Replies: 1
by Whatever » Mon May 21, 2012 3:24 pm

1 Replies

9582 Views

Last post by Conny Forsberg
Tue May 22, 2012 4:29 pm
Elements: Issue on Gems

Last post by Gemsandjewellery « Tue Feb 14, 2012 3:24 pm
Replies: 6
by Barbra Voltaire, FGG » Thu Feb 10, 2011 7:44 pm

6 Replies

12724 Views

Last post by Gemsandjewellery
Tue Feb 14, 2012 3:24 pm

New Topic

80 topics

Return to Board Index

Forum permissions

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum