Gemological Articles

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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

29916 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

57241 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

56795 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

58740 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

43935 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

20488 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

6278 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

5418 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

5923 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

9628 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

7160 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

8528 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

8591 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

7191 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

11512 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

7537 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

8282 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

10402 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

10899 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

11142 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

10654 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

11772 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

11599 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

10420 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

9793 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

5919 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

6038 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

10585 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

12521 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

6625 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

6362 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

6995 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

6900 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

6508 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

7967 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

7637 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

15977 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

10711 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

7316 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

6405 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

7524 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

6900 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

7459 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

6902 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

7278 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

7151 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

6744 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

8231 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

7133 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

10066 Views

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

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