GIA Current Research

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Quantifying Diamond Fluorescence and Its Visual Impact

Last post by dchallener « Mon Jun 05, 2023 9:12 pm
Replies: 8
by Barbra Voltaire, FGG » Thu Dec 16, 2021 7:37 pm

8 Replies

67180 Views

Last post by dchallener
Mon Jun 05, 2023 9:12 pm
Blue sapphires from Kataragama, Sri Lanka

Last post by bacjanaka « Mon Jan 09, 2023 12:25 pm
Replies: 3
by vincent pardieu » Wed May 02, 2012 6:01 am

3 Replies

20778 Views

Last post by bacjanaka
Mon Jan 09, 2023 12:25 pm
New Emerald Locality in Southrn California

Last post by path914 « Thu Jun 02, 2022 1:16 pm
Replies: 15
by Barbra Voltaire, FGG » Fri Aug 20, 2021 10:59 pm
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2
15 Replies

23881 Views

Last post by path914
Thu Jun 02, 2022 1:16 pm
A Glimmer of Hope: The World's Most Famous Blue Diamond

Last post by Barbra Voltaire, FGG « Thu Dec 16, 2021 7:46 pm

by Barbra Voltaire, FGG » Thu Dec 16, 2021 7:46 pm

0 Replies

27675 Views

Last post by Barbra Voltaire, FGG
Thu Dec 16, 2021 7:46 pm
Inclusions in Natural, Synthetic, and Treated Ruby

Last post by path914 « Fri Jun 12, 2020 2:03 pm
Replies: 3
by Barbra Voltaire, FGG » Wed Apr 15, 2020 3:12 pm

3 Replies

18318 Views

Last post by path914
Fri Jun 12, 2020 2:03 pm
Improving the Future of Origin Determination. What's Next?

Last post by Barbra Voltaire, FGG « Wed Feb 26, 2020 9:48 pm

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:48 pm

0 Replies

11962 Views

Last post by Barbra Voltaire, FGG
Wed Feb 26, 2020 9:48 pm
A Review of Analytical Methods Used in Origin Determination

Last post by Barbra Voltaire, FGG « Wed Feb 26, 2020 9:46 pm

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:46 pm

0 Replies

8076 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

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:45 pm

0 Replies

7682 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

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:43 pm

0 Replies

7516 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

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:41 pm

0 Replies

7666 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

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:35 pm

0 Replies

7433 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

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:34 pm

0 Replies

7629 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

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:29 pm

0 Replies

7575 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

by Barbra Voltaire, FGG » Wed Feb 26, 2020 9:23 pm

0 Replies

7517 Views

Last post by Barbra Voltaire, FGG
Wed Feb 26, 2020 9:23 pm
G&G Micro-world article

Last post by dchallener « Wed Jan 08, 2020 6:54 pm
Replies: 5
by path914 » Tue Jan 07, 2020 6:04 pm

5 Replies

9862 Views

Last post by dchallener
Wed Jan 08, 2020 6:54 pm
New Find of Deep Blue Aquamarine from in Nigeria

Last post by Stephen Challener « Thu Nov 28, 2019 11:08 pm
Replies: 2
by Barbra Voltaire, FGG » Wed Nov 27, 2019 9:44 pm

2 Replies

8657 Views

Last post by Stephen Challener
Thu Nov 28, 2019 11:08 pm
Madagascar Sapphire: Low-Temperature Heat Treatment

Last post by Barbra Voltaire, FGG « Tue Nov 26, 2019 1:16 pm
Replies: 4
by Barbra Voltaire, FGG » Mon Aug 19, 2019 3:12 pm

4 Replies

14674 Views

Last post by Barbra Voltaire, FGG
Tue Nov 26, 2019 1:16 pm
Inclusions:Natural, Treated, Synthetic, and Imitation Opals

Last post by JackTrick « Mon Nov 04, 2019 2:33 pm
Replies: 3
by Barbra Voltaire, FGG » Mon Aug 19, 2019 3:03 pm

3 Replies

10225 Views

Last post by JackTrick
Mon Nov 04, 2019 2:33 pm
"Rubies from Cambodia and Thailand"

Last post by Barbra Voltaire, FGG « Sat Nov 11, 2017 5:30 pm

by Barbra Voltaire, FGG » Sat Nov 11, 2017 5:30 pm

0 Replies

14364 Views

Last post by Barbra Voltaire, FGG
Sat Nov 11, 2017 5:30 pm
Vanadium and Chromium-Bearing “Color-Change” Pyrope Garnet

Last post by MADADIDIERITE « Thu Mar 23, 2017 4:14 am
Replies: 8
by Nathan Renfro » Wed Jan 20, 2016 9:01 pm

8 Replies

13257 Views

Last post by MADADIDIERITE
Thu Mar 23, 2017 4:14 am
Bluish Green Chalcedony

Last post by Barbra Voltaire, FGG « Sat Feb 27, 2016 2:27 pm
Replies: 5
by Nathan Renfro » Sun Jan 31, 2016 8:55 pm

5 Replies

10903 Views

Last post by Barbra Voltaire, FGG
Sat Feb 27, 2016 2:27 pm
New Field Report from Vincent Pardieu

Last post by dchallener « Thu Nov 12, 2015 11:15 pm
Replies: 2
by Barbra Voltaire, FGG » Tue Oct 13, 2015 5:34 pm

2 Replies

9299 Views

Last post by dchallener
Thu Nov 12, 2015 11:15 pm
Joseph Gill's 81 years of G&G Free Download

Last post by tman « Sat Oct 24, 2015 4:31 am
Replies: 2
by Barbra Voltaire, FGG » Fri Sep 11, 2015 10:50 am

2 Replies

10400 Views

Last post by tman
Sat Oct 24, 2015 4:31 am
Field Gemology videos on the new GIA in Thailand website

Last post by vincent pardieu « Fri Jun 26, 2015 12:49 pm

by vincent pardieu » Fri Jun 26, 2015 12:49 pm

0 Replies

9624 Views

Last post by vincent pardieu
Fri Jun 26, 2015 12:49 pm
Horsetails in Pakistani Demantoids

Last post by Stephen Challener « Fri Mar 13, 2015 12:15 pm
Replies: 2
by Stephen Challener » Wed Mar 11, 2015 9:01 pm

2 Replies

9475 Views

Last post by Stephen Challener
Fri Mar 13, 2015 12:15 pm
Article about Mogok on GIA website.

Last post by Mhoare87 « Wed Jun 04, 2014 7:13 am
Replies: 8
by Barbra Voltaire, FGG » Mon Apr 14, 2014 11:19 pm

8 Replies

12969 Views

Last post by Mhoare87
Wed Jun 04, 2014 7:13 am
Update about rubies from Mozambique

Last post by danielle « Wed Oct 23, 2013 2:16 pm
Replies: 8
by vincent pardieu » Mon Sep 14, 2009 5:40 am

8 Replies

15420 Views

Last post by danielle
Wed Oct 23, 2013 2:16 pm
Beryllium Treated Blue Sapphires

Last post by Alberto « Wed Oct 16, 2013 9:27 am
Replies: 6
by vincent pardieu » Fri Jun 26, 2009 12:00 pm

6 Replies

14452 Views

Last post by Alberto
Wed Oct 16, 2013 9:27 am
Vincent Pardieu -Treatment / mining connection

Last post by vincent pardieu « Thu May 23, 2013 12:33 pm
Replies: 8
by Alberto » Thu May 02, 2013 3:52 am

8 Replies

13314 Views

Last post by vincent pardieu
Thu May 23, 2013 12:33 pm
Rubies and sapphires from Didy, Madagascar

Last post by vincent pardieu « Mon Oct 29, 2012 8:56 pm
Replies: 9
by vincent pardieu » Tue Oct 16, 2012 11:38 am

9 Replies

14552 Views

Last post by vincent pardieu
Mon Oct 29, 2012 8:56 pm
"Special Report on Red Feldspar, Part 2" on GIA website

Last post by gemlover « Tue Sep 13, 2011 1:08 am
Replies: 2
by vincent pardieu » Tue Aug 02, 2011 2:31 pm

2 Replies

10766 Views

Last post by gemlover
Tue Sep 13, 2011 1:08 am
G&G eBriefs

Last post by mehoose « Tue Jul 06, 2010 2:28 pm
Replies: 2
by Barbra Voltaire, FGG » Sun Jun 27, 2010 6:49 pm

2 Replies

10935 Views

Last post by mehoose
Tue Jul 06, 2010 2:28 pm
Modified Tourmaline

Last post by Barbara O. Ellis « Wed Jul 10, 2013 11:51 pm
Replies: 10
by Megatastic » Thu Jun 24, 2010 1:21 am

10 Replies

24419 Views

Last post by Barbara O. Ellis
Wed Jul 10, 2013 11:51 pm
Rubies with partially healed and filled fissures.

Last post by Alberto « Thu May 13, 2010 3:05 am
Replies: 7
by vincent pardieu » Tue May 11, 2010 10:58 am

7 Replies

13500 Views

Last post by Alberto
Thu May 13, 2010 3:05 am
Lead Glass filled Star Rubies reportedly from Madagascar

Last post by kashmirsapphire « Thu Feb 11, 2010 11:46 am
Replies: 8
by vincent pardieu » Mon Feb 01, 2010 7:17 am

8 Replies

14052 Views

Last post by kashmirsapphire
Thu Feb 11, 2010 11:46 am
The microradiographic structures of non bead cultured pearls

Last post by vincent pardieu « Sat Nov 21, 2009 12:49 am

by vincent pardieu » Sat Nov 21, 2009 12:49 am

0 Replies

11140 Views

Last post by vincent pardieu
Sat Nov 21, 2009 12:49 am
The potential for diffusing copper into tourmaline, updated

Last post by Barbra Voltaire, FGG « Mon Aug 03, 2009 11:45 am
Replies: 3
by vincent pardieu » Wed Jul 29, 2009 8:41 pm

3 Replies

11953 Views

Last post by Barbra Voltaire, FGG
Mon Aug 03, 2009 11:45 am
New pdf posted on gia.edu in News from Research"

Last post by vincent pardieu « Wed Jun 17, 2009 10:33 pm

by vincent pardieu » Wed Jun 17, 2009 10:33 pm

0 Replies

23252 Views

Last post by vincent pardieu
Wed Jun 17, 2009 10:33 pm
New pdf posted on GIA Laboratory Bangkok Ongoing Research pa

Last post by vincent pardieu « Tue Jun 16, 2009 11:43 pm
Replies: 4
by vincent pardieu » Mon Jun 15, 2009 12:27 pm

4 Replies

12143 Views

Last post by vincent pardieu
Tue Jun 16, 2009 11:43 pm

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