Gems' Color

Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto, Gemewizard

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Garnet rabbit hole….

Last post by RickR134 « Sat Oct 05, 2024 9:03 pm
Replies: 10
by RickR134 » Mon Sep 30, 2024 9:32 pm

10 Replies

41623 Views

Last post by RickR134
Sat Oct 05, 2024 9:03 pm
Unique colors found in cuprian and some Paraiba tourmaline?

Last post by Barbra Voltaire, FGG « Mon Jul 11, 2022 1:37 pm
Replies: 1
by bruce_tourm » Thu Jul 07, 2022 7:03 am

1 Replies

46014 Views

Last post by Barbra Voltaire, FGG
Mon Jul 11, 2022 1:37 pm
araiba like tourmaline, a misbegotten variety.

Last post by bruce_tourm « Mon Jul 04, 2022 6:46 am

by bruce_tourm » Mon Jul 04, 2022 6:46 am

0 Replies

47408 Views

Last post by bruce_tourm
Mon Jul 04, 2022 6:46 am
How would you define this sapphire’s colour?

Last post by glhays « Sun Feb 13, 2022 2:07 pm
Replies: 36
by Mandira » Fri Jun 26, 2020 9:21 am
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36 Replies

34449 Views

Last post by glhays
Sun Feb 13, 2022 2:07 pm
Puzzled on color - star sapphire

Last post by Jewels Lobato « Mon Feb 07, 2022 1:17 am
Replies: 5
by Jewels Lobato » Tue Feb 01, 2022 5:52 pm

5 Replies

6854 Views

Last post by Jewels Lobato
Mon Feb 07, 2022 1:17 am
ClarifyingVarious Kinds of lighting..?

Last post by Barbra Voltaire, FGG « Fri Nov 27, 2020 2:13 pm
Replies: 1
by firedrake » Fri Nov 27, 2020 1:33 pm

1 Replies

15785 Views

Last post by Barbra Voltaire, FGG
Fri Nov 27, 2020 2:13 pm
David Weinberg Discusses Color

Last post by Barbra Voltaire, FGG « Sat Feb 15, 2020 1:29 am
Replies: 4
by Barbra Voltaire, FGG » Tue Feb 11, 2020 1:13 pm

4 Replies

8951 Views

Last post by Barbra Voltaire, FGG
Sat Feb 15, 2020 1:29 am
Color Varieties of Gems – Where To Set the Boundary?

Last post by Barbra Voltaire, FGG « Tue Feb 04, 2020 11:53 pm
Replies: 7
by Barbra Voltaire, FGG » Wed Jan 29, 2020 12:49 pm

7 Replies

8392 Views

Last post by Barbra Voltaire, FGG
Tue Feb 04, 2020 11:53 pm
From GemeWizard: The effect heat has on rubies

Last post by Ukrinsky « Sat Dec 07, 2019 10:04 pm
Replies: 1
by Barbra Voltaire, FGG » Sun Dec 01, 2019 9:36 pm

1 Replies

7066 Views

Last post by Ukrinsky
Sat Dec 07, 2019 10:04 pm
Thoughts on tourmaline's dynamic response to light.

Last post by bruce_tourm « Fri Jun 07, 2019 2:13 pm

by bruce_tourm » Fri Jun 07, 2019 2:13 pm

0 Replies

21200 Views

Last post by bruce_tourm
Fri Jun 07, 2019 2:13 pm
Ruby, pigeon blood or sunset ruby in rough

Last post by offimatrix « Fri May 24, 2019 1:06 pm
Replies: 6
by offimatrix » Thu May 23, 2019 12:20 pm

6 Replies

9955 Views

Last post by offimatrix
Fri May 24, 2019 1:06 pm
Pleochroism and cutting

Last post by Isi « Mon Mar 18, 2019 6:18 am

by Isi » Mon Mar 18, 2019 6:18 am

0 Replies

7664 Views

Last post by Isi
Mon Mar 18, 2019 6:18 am
Fluorite threelobes

Last post by Stephen Challener « Tue Sep 19, 2017 3:26 pm
Replies: 1
by 75TURBO » Tue Sep 19, 2017 5:29 am

1 Replies

10396 Views

Last post by Stephen Challener
Tue Sep 19, 2017 3:26 pm
Calling a purplish red tourmalinle, cuprian

Last post by Stephen Challener « Thu Sep 14, 2017 7:41 pm
Replies: 7
by bruce_tourm » Mon Mar 13, 2017 9:24 pm

7 Replies

10894 Views

Last post by Stephen Challener
Thu Sep 14, 2017 7:41 pm
Opal color grading

Last post by ROM « Fri Aug 18, 2017 11:09 pm
Replies: 8
by iwakasu » Fri Aug 12, 2016 11:13 am

8 Replies

10348 Views

Last post by ROM
Fri Aug 18, 2017 11:09 pm
Gems' colors and types of lights

Last post by Marlow « Thu Jan 12, 2017 5:51 pm
Replies: 11
by Isi » Mon Jan 09, 2017 9:35 am

11 Replies

11540 Views

Last post by Marlow
Thu Jan 12, 2017 5:51 pm
2016 Hammer Prices for Colored Diamonds

Last post by Barbra Voltaire, FGG « Wed Jan 04, 2017 1:00 pm
Replies: 1
by Gemewizard » Wed Jan 04, 2017 5:41 am

1 Replies

7240 Views

Last post by Barbra Voltaire, FGG
Wed Jan 04, 2017 1:00 pm
Ruby, Pink Sapphire or something else? Help

Last post by Alexander_Z « Thu Sep 15, 2016 10:58 am
Replies: 8
by R.becker » Sun Jul 24, 2016 3:01 pm

8 Replies

9668 Views

Last post by Alexander_Z
Thu Sep 15, 2016 10:58 am
Gray shades of blue and purple in Paraiba, paraiba type, etc

Last post by bruce_tourm « Sun Feb 28, 2016 6:19 pm
Replies: 11
by bruce_tourm » Wed Dec 16, 2015 2:37 pm

11 Replies

13075 Views

Last post by bruce_tourm
Sun Feb 28, 2016 6:19 pm
Helenite?

Last post by AlBalmer « Wed Jan 20, 2016 4:50 pm
Replies: 11
by Dan&Sally » Mon Jan 18, 2016 1:22 am

11 Replies

12010 Views

Last post by AlBalmer
Wed Jan 20, 2016 4:50 pm
Confusing Chromophores Can Confuse Gemmos

Last post by Dan&Sally « Mon Jan 18, 2016 1:02 am
Replies: 28
by Barbra Voltaire, FGG » Mon Apr 07, 2014 10:48 pm
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28 Replies

24950 Views

Last post by Dan&Sally
Mon Jan 18, 2016 1:02 am
Trace Element characterization of tourmalines worldwide

Last post by Tom Herman « Fri Dec 16, 2016 1:13 am
Replies: 6
by Jason Barrett » Sat Jul 18, 2015 2:02 am

6 Replies

15353 Views

Last post by Tom Herman
Fri Dec 16, 2016 1:13 am
A gemstone match for each Pantone color trend - Spring 2015

Last post by Alberto « Thu Apr 16, 2015 1:19 pm
Replies: 11
by Barbra Voltaire, FGG » Mon Oct 06, 2014 12:02 pm

11 Replies

15852 Views

Last post by Alberto
Thu Apr 16, 2015 1:19 pm
Guy Borenstein, FGA, EGG

Last post by Gemewizard « Sun Apr 06, 2014 6:59 am
Replies: 3
by Barbra Voltaire, FGG » Tue Apr 01, 2014 6:56 pm

3 Replies

8945 Views

Last post by Gemewizard
Sun Apr 06, 2014 6:59 am

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