Questions for the Experts

Moderators: Stephen Challener, Barbra Voltaire, FGG, Alberto

New Topic

719 topics

Page 1 of 15
- Jump to page:
1
2
3
4
5
…
15
Next

Topics

Replies

Views

Last post

Why no green quartz coloured by chromophore elements in nature ?

Last post by cascaillou « Thu Mar 12, 2026 8:51 am
Replies: 6
by cascaillou » Sat Mar 07, 2026 6:53 pm

6 Replies

2706 Views

Last post by cascaillou
Thu Mar 12, 2026 8:51 am
Saphiret

Last post by steinfroilein « Tue Jul 29, 2025 6:48 am
Replies: 4
by steinfroilein » Sat Jul 19, 2025 11:48 am

4 Replies

9797 Views

Last post by steinfroilein
Tue Jul 29, 2025 6:48 am
Kornerupin from Vietnam

Last post by chrisP « Mon May 26, 2025 5:04 am
Replies: 4
by chrisP » Tue May 13, 2025 3:20 am

4 Replies

36440 Views

Last post by chrisP
Mon May 26, 2025 5:04 am
Confusing gemstone report

Last post by Barbra Voltaire, FGG « Sat May 10, 2025 12:37 pm
Replies: 4
by chrisP » Wed May 07, 2025 10:48 am

4 Replies

56187 Views

Last post by Barbra Voltaire, FGG
Sat May 10, 2025 12:37 pm
Now Here Is Something Interesting

Last post by dchallener « Wed Mar 26, 2025 8:18 pm
Replies: 7
by Solomon » Fri Jul 07, 2017 12:23 pm

7 Replies

15325 Views

Last post by dchallener
Wed Mar 26, 2025 8:18 pm
Ideas of what this could be?

Last post by S. Rautiainen « Mon May 27, 2024 1:09 pm
Replies: 1
by Greenbird » Sun May 19, 2024 3:54 am

1 Replies

19291 Views

Last post by S. Rautiainen
Mon May 27, 2024 1:09 pm
X-ray fluorescence (XRF) used by coin dealers

Last post by roshanravan « Mon Apr 22, 2024 4:30 pm
Replies: 14
by Barbra Voltaire, FGG » Fri Mar 15, 2024 6:37 pm

14 Replies

14717 Views

Last post by roshanravan
Mon Apr 22, 2024 4:30 pm
Looking for an appraiser

Last post by Barbra Voltaire, FGG « Fri Feb 23, 2024 2:49 pm
Replies: 8
by dchallener » Mon Feb 05, 2024 7:11 pm

8 Replies

8482 Views

Last post by Barbra Voltaire, FGG
Fri Feb 23, 2024 2:49 pm
Is this black zircon?

Last post by Stephen Challener « Sun Feb 18, 2024 5:55 pm
Replies: 1
by CleavageFeavage » Mon Feb 12, 2024 9:00 pm

1 Replies

5053 Views

Last post by Stephen Challener
Sun Feb 18, 2024 5:55 pm
Carbonado black diamond meteorite (?)

Last post by Ast530 « Sat Feb 03, 2024 1:07 am
Replies: 1
by russelljds » Wed Jan 03, 2024 3:26 pm

1 Replies

7486 Views

Last post by Ast530
Sat Feb 03, 2024 1:07 am
Interesting Stone/artifact

Last post by Dor « Fri Dec 29, 2023 10:56 am

by Dor » Fri Dec 29, 2023 10:56 am

0 Replies

16027 Views

Last post by Dor
Fri Dec 29, 2023 10:56 am
Can You Please Identify this Stone? TY

Last post by Ezeepass « Fri Dec 08, 2023 7:19 pm
Replies: 2
by Ezeepass » Fri Dec 08, 2023 1:54 pm

2 Replies

7152 Views

Last post by Ezeepass
Fri Dec 08, 2023 7:19 pm
What does this appraisal mean?

Last post by 1bwana1 « Tue Oct 03, 2023 11:59 pm
Replies: 3
by dchallener » Tue Oct 03, 2023 1:02 pm

3 Replies

9568 Views

Last post by 1bwana1
Tue Oct 03, 2023 11:59 pm
Ideas to the possible value of this large Emerald?

Last post by glhays « Mon Mar 13, 2023 5:47 pm
Replies: 10
by Chipper1958 » Sun Mar 12, 2023 1:49 pm

10 Replies

15225 Views

Last post by glhays
Mon Mar 13, 2023 5:47 pm
Purchased as tourmaline and aqua.

Last post by Jeffreyaz « Fri Feb 17, 2023 11:30 pm
Replies: 15
by Jeffreyaz » Sat Feb 11, 2023 11:45 pm
1

2
15 Replies

14363 Views

Last post by Jeffreyaz
Fri Feb 17, 2023 11:30 pm
Mystery Specimen

Last post by Barbra Voltaire, FGG « Wed Aug 24, 2022 7:41 pm
Replies: 7
by Barbra Voltaire, FGG » Tue Aug 23, 2022 9:40 pm

7 Replies

13007 Views

Last post by Barbra Voltaire, FGG
Wed Aug 24, 2022 7:41 pm
Spinel…synthetic?

Last post by arglthesheep « Fri Jul 08, 2022 1:39 am
Replies: 2
by natashacgem » Wed Jul 06, 2022 1:07 pm

2 Replies

12294 Views

Last post by arglthesheep
Fri Jul 08, 2022 1:39 am
Hollow form jewelry versus electroformed over resin jewelry

Last post by glhays « Mon Jun 06, 2022 12:52 pm
Replies: 7
by jlgulledge » Fri Jun 03, 2022 5:22 pm

7 Replies

15151 Views

Last post by glhays
Mon Jun 06, 2022 12:52 pm
ISO Gemology Microscopes, please....

Last post by glhays « Sat Mar 26, 2022 8:29 pm
Replies: 2
by QIA » Fri Mar 25, 2022 7:17 pm

2 Replies

8048 Views

Last post by glhays
Sat Mar 26, 2022 8:29 pm
Rutile Silk?

Last post by Barbra Voltaire, FGG « Thu Mar 17, 2022 10:23 pm
Replies: 5
by rogerg » Thu Mar 17, 2022 9:34 pm

5 Replies

7377 Views

Last post by Barbra Voltaire, FGG
Thu Mar 17, 2022 10:23 pm
Hydrogrossular confusions

Last post by PL01 « Tue Nov 16, 2021 4:01 pm
Replies: 21
by PL01 » Fri Nov 05, 2021 7:39 am
1

2
21 Replies

18898 Views

Last post by PL01
Tue Nov 16, 2021 4:01 pm
Questions About Sapphires

Last post by Barbra Voltaire, FGG « Sun Oct 10, 2021 1:10 pm
Replies: 23
by Arami » Mon Oct 04, 2021 9:28 pm
1

2
23 Replies

17073 Views

Last post by Barbra Voltaire, FGG
Sun Oct 10, 2021 1:10 pm
Large Stone found in SE Virginia

Last post by Stephen Challener « Wed Oct 06, 2021 11:17 pm
Replies: 2
by norseman » Wed Oct 06, 2021 6:26 pm

2 Replies

5979 Views

Last post by Stephen Challener
Wed Oct 06, 2021 11:17 pm
Anyone know this stone or crystal

Last post by Barbra Voltaire, FGG « Thu Sep 30, 2021 2:21 pm
Replies: 1
by Megancline86 » Wed Sep 29, 2021 6:11 pm

1 Replies

5967 Views

Last post by Barbra Voltaire, FGG
Thu Sep 30, 2021 2:21 pm
crystal quartz with unusual form

Last post by sangshenas « Tue Jul 27, 2021 7:17 am
Replies: 3
by sangshenas » Mon Jul 26, 2021 8:36 am

3 Replies

9056 Views

Last post by sangshenas
Tue Jul 27, 2021 7:17 am
which is this kind of stone

Last post by Brian « Wed Jun 16, 2021 3:50 pm
Replies: 6
by Toni46424 » Sat Jun 12, 2021 4:23 am

6 Replies

9979 Views

Last post by Brian
Wed Jun 16, 2021 3:50 pm
Can you help me with identifycation the stone, please ?

Last post by glhays « Tue Jun 01, 2021 9:55 pm
Replies: 19
by Wilhelm » Thu Feb 25, 2021 3:07 am
1

2
19 Replies

20121 Views

Last post by glhays
Tue Jun 01, 2021 9:55 pm
Yellowing opal

Last post by 1bwana1 « Wed May 26, 2021 8:26 pm
Replies: 16
by SarahM2718 » Fri May 21, 2021 7:12 pm
1

2
16 Replies

32379 Views

Last post by 1bwana1
Wed May 26, 2021 8:26 pm
Reversible Tenebrescence Revisited

Last post by Barbra Voltaire, FGG « Thu May 13, 2021 9:25 pm
Replies: 2
by Barbra Voltaire, FGG » Thu May 13, 2021 3:18 pm

2 Replies

10196 Views

Last post by Barbra Voltaire, FGG
Thu May 13, 2021 9:25 pm
New from Afghanistan Mine

Last post by Icehut « Sun May 09, 2021 11:53 pm
Replies: 10
by j.mcgee_1985 » Thu Mar 11, 2021 12:30 am

10 Replies

15185 Views

Last post by Icehut
Sun May 09, 2021 11:53 pm
MDR Machine

Last post by j.mcgee_1985 « Tue Mar 23, 2021 1:56 pm
Replies: 5
by j.mcgee_1985 » Mon Mar 22, 2021 2:57 pm

5 Replies

14003 Views

Last post by j.mcgee_1985
Tue Mar 23, 2021 1:56 pm
Chip and possible fracture? Sapphire question...

Last post by Barbra Voltaire, FGG « Tue Jan 05, 2021 4:49 pm
Replies: 14
by jolielaide » Sun Jan 03, 2021 3:49 pm

14 Replies

20401 Views

Last post by Barbra Voltaire, FGG
Tue Jan 05, 2021 4:49 pm
Anyone know what this is?

Last post by 1bwana1 « Wed Dec 23, 2020 7:45 pm
Replies: 3
by janiern555 » Thu Nov 12, 2020 2:49 pm

3 Replies

16562 Views

Last post by 1bwana1
Wed Dec 23, 2020 7:45 pm
Anyone know what this is?

Last post by glhays « Wed Dec 23, 2020 6:41 pm
Replies: 1
by janiern555 » Thu Nov 12, 2020 2:21 pm

1 Replies

14977 Views

Last post by glhays
Wed Dec 23, 2020 6:41 pm
Identification help

Last post by Stephen Challener « Mon Dec 21, 2020 2:02 pm
Replies: 3
by D2THEAVID » Thu Dec 17, 2020 11:54 pm

3 Replies

13720 Views

Last post by Stephen Challener
Mon Dec 21, 2020 2:02 pm
Help please

Last post by dchallener « Fri Dec 18, 2020 12:28 pm
Replies: 7
by D2THEAVID » Thu Dec 17, 2020 4:09 pm

7 Replies

12710 Views

Last post by dchallener
Fri Dec 18, 2020 12:28 pm
Anyone know what this is?

Last post by Barbra Voltaire, FGG « Fri Nov 13, 2020 3:05 pm
Replies: 3
by janiern555 » Thu Nov 12, 2020 2:31 pm

3 Replies

11287 Views

Last post by Barbra Voltaire, FGG
Fri Nov 13, 2020 3:05 pm
Curious

Last post by abeck « Mon Nov 02, 2020 6:59 pm
Replies: 8
by AliciaLynn03 » Sat Oct 31, 2020 5:23 am

8 Replies

8724 Views

Last post by abeck
Mon Nov 02, 2020 6:59 pm
gemstone hardness

Last post by Barbra Voltaire, FGG « Fri Oct 23, 2020 1:13 pm
Replies: 30
by nirmala-raman » Sun Sep 11, 2011 1:11 pm
1

2

3
30 Replies

36011 Views

Last post by Barbra Voltaire, FGG
Fri Oct 23, 2020 1:13 pm
Spessartite Garnet Extradinaire

Last post by Barbra Voltaire, FGG « Mon Oct 12, 2020 7:34 pm
Replies: 4
by Barbra Voltaire, FGG » Mon Oct 12, 2020 2:16 pm

4 Replies

7375 Views

Last post by Barbra Voltaire, FGG
Mon Oct 12, 2020 7:34 pm
Can Someone ID this Crystal

Last post by Stephen Challener « Wed Sep 30, 2020 10:50 pm
Replies: 7
by glhays » Mon Sep 28, 2020 9:26 pm

7 Replies

7718 Views

Last post by Stephen Challener
Wed Sep 30, 2020 10:50 pm
Natural Ruby

Last post by Barbra Voltaire, FGG « Fri Sep 25, 2020 4:18 pm
Replies: 15
by Diacutter » Wed Sep 23, 2020 11:59 am
1

2
15 Replies

12838 Views

Last post by Barbra Voltaire, FGG
Fri Sep 25, 2020 4:18 pm
Help in identify needed

Last post by 1bwana1 « Wed Sep 16, 2020 2:53 pm
Replies: 17
by Bigiiii » Sat Sep 05, 2020 4:48 am
1

2
17 Replies

14326 Views

Last post by 1bwana1
Wed Sep 16, 2020 2:53 pm
Cleaning Ethiopian opal beads

Last post by Barbra Voltaire, FGG « Fri Sep 11, 2020 12:41 pm
Replies: 2
by Barbra Voltaire, FGG » Fri Sep 11, 2020 1:28 am

2 Replies

6288 Views

Last post by Barbra Voltaire, FGG
Fri Sep 11, 2020 12:41 pm
identifying tumbled stones from south africa

Last post by Stephen Challener « Wed Sep 02, 2020 11:23 pm
Replies: 11
by kimmychristine » Tue Sep 01, 2020 12:47 pm

11 Replies

8560 Views

Last post by Stephen Challener
Wed Sep 02, 2020 11:23 pm
Carat loss on recut

Last post by glhays « Sat Aug 08, 2020 4:47 pm
Replies: 4
by Cinnabar » Sat Aug 08, 2020 1:08 am

4 Replies

7654 Views

Last post by glhays
Sat Aug 08, 2020 4:47 pm
Green Jadeite Bangle and Other Pieces

Last post by danielle « Fri Jul 17, 2020 4:38 am
Replies: 3
by Camilo23 » Tue Jul 14, 2020 8:32 pm

3 Replies

7299 Views

Last post by danielle
Fri Jul 17, 2020 4:38 am
Jadeite bangle and nephrite necklace help please.

Last post by Barbra Voltaire, FGG « Wed Jul 15, 2020 3:54 pm
Replies: 18
by Ralfrey » Tue May 31, 2011 1:14 pm
1

2
18 Replies

21510 Views

Last post by Barbra Voltaire, FGG
Wed Jul 15, 2020 3:54 pm
Why do hydrothermal synthetics look so weird?

Last post by Mandira « Thu Jul 09, 2020 9:03 pm
Replies: 9
by Mandira » Fri Jun 26, 2020 9:13 am

9 Replies

10622 Views

Last post by Mandira
Thu Jul 09, 2020 9:03 pm
rosarita red

Last post by gembug « Fri Jun 12, 2020 2:37 am
Replies: 6
by steve5542 » Mon May 18, 2020 12:19 pm

6 Replies

9282 Views

Last post by gembug
Fri Jun 12, 2020 2:37 am

New Topic

719 topics

Page 1 of 15
- Jump to page:
1
2
3
4
5
…
15
Next

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