Colored Stones

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Brazilian Paraiba with a reverse color change

Last post by Marlow « Fri Apr 03, 2026 11:42 am

by Marlow » Fri Apr 03, 2026 11:42 am

0 Replies

176 Views

Last post by Marlow
Fri Apr 03, 2026 11:42 am
Question about Kashmir Sapphire

Last post by Dioptase « Mon Mar 30, 2026 11:00 pm
Replies: 18
by Mohmand » Tue Jan 12, 2021 3:30 pm
1

2
18 Replies

7644 Views

Last post by Dioptase
Mon Mar 30, 2026 11:00 pm
Ethiopian Opal Cabochons – Questions on Quality & Stability

Last post by Barbra Voltaire, FGG « Sun Jan 25, 2026 2:57 pm

by Barbra Voltaire, FGG » Sun Jan 25, 2026 2:57 pm

0 Replies

2758 Views

Last post by Barbra Voltaire, FGG
Sun Jan 25, 2026 2:57 pm
Massive Emerald Rock Found in Presidential Palace

Last post by dchallener « Sat Nov 29, 2025 9:35 pm
Replies: 2
by Barbra Voltaire, FGG » Thu Nov 27, 2025 4:10 pm

2 Replies

3788 Views

Last post by dchallener
Sat Nov 29, 2025 9:35 pm
The rare Hauyne stone

Last post by steinfroilein « Wed Oct 29, 2025 11:12 am
Replies: 14
by Mohmand » Thu Jul 11, 2024 10:56 am

14 Replies

29966 Views

Last post by steinfroilein
Wed Oct 29, 2025 11:12 am
Split copper lap

Last post by Duncan Miller « Fri Oct 17, 2025 3:05 am
Replies: 1
by wilsonintexas » Thu Jun 26, 2025 3:20 pm

1 Replies

7734 Views

Last post by Duncan Miller
Fri Oct 17, 2025 3:05 am
What type of inclusion is this?

Last post by Barbra Voltaire, FGG « Thu May 22, 2025 1:18 pm
Replies: 1
by DM-smith » Sun May 18, 2025 3:11 am

1 Replies

31600 Views

Last post by Barbra Voltaire, FGG
Thu May 22, 2025 1:18 pm
New source of Vayrynenite

Last post by danielle « Tue Apr 01, 2025 5:03 am
Replies: 3
by Dioptase » Fri Mar 28, 2025 12:41 am

3 Replies

20149 Views

Last post by danielle
Tue Apr 01, 2025 5:03 am
Anyone familiar with larsonite?

Last post by Barbra Voltaire, FGG « Fri Feb 28, 2025 1:05 pm
Replies: 5
by JeanLi1986 » Wed Feb 12, 2025 4:44 am

5 Replies

15113 Views

Last post by Barbra Voltaire, FGG
Fri Feb 28, 2025 1:05 pm
Cutting Oregon Sunstones: A Step-by-Step Guide

Last post by Azard_faza « Fri Feb 21, 2025 6:58 am
Replies: 2
by Azard_faza » Wed Jan 15, 2025 5:04 am

2 Replies

13267 Views

Last post by Azard_faza
Fri Feb 21, 2025 6:58 am
Marquis cut query

Last post by Barbra Voltaire, FGG « Wed Feb 12, 2025 2:40 pm
Replies: 2
by salik » Fri Feb 07, 2025 10:32 pm

2 Replies

4885 Views

Last post by Barbra Voltaire, FGG
Wed Feb 12, 2025 2:40 pm
Orange Fire Opal Turning Misty – Seeking Advice

Last post by 1bwana1 « Mon Dec 23, 2024 11:30 pm
Replies: 5
by hafiz » Sun Dec 22, 2024 10:50 am

5 Replies

32175 Views

Last post by 1bwana1
Mon Dec 23, 2024 11:30 pm
Zultanite of 54.73 carats on an 18K gold ring

Last post by Barbra Voltaire, FGG « Mon Nov 18, 2024 11:28 pm
Replies: 3
by Floflo_ch » Thu Nov 14, 2024 2:25 pm

3 Replies

6511 Views

Last post by Barbra Voltaire, FGG
Mon Nov 18, 2024 11:28 pm
20+ carat red carved stone the size of a nickel...Ruby?

Last post by Stephen Challener « Mon Nov 18, 2024 3:37 pm
Replies: 6
by JRVAULTS » Fri Oct 25, 2024 7:51 am

6 Replies

7908 Views

Last post by Stephen Challener
Mon Nov 18, 2024 3:37 pm
Gemfields suffered a slump in sales

Last post by Dioptase « Fri Sep 20, 2024 7:32 pm
Replies: 1
by Barbra Voltaire, FGG » Thu Sep 19, 2024 7:47 pm

1 Replies

10793 Views

Last post by Dioptase
Fri Sep 20, 2024 7:32 pm
Could this be a Paraiba Tourmaline?

Last post by 1bwana1 « Mon Aug 26, 2024 11:51 am
Replies: 2
by JRVAULTS » Fri Aug 23, 2024 10:04 am

2 Replies

9442 Views

Last post by 1bwana1
Mon Aug 26, 2024 11:51 am
Emerald Jackpot

Last post by 1bwana1 « Mon Aug 26, 2024 11:45 am
Replies: 1
by Mohmand » Mon Aug 26, 2024 5:40 am

1 Replies

9373 Views

Last post by 1bwana1
Mon Aug 26, 2024 11:45 am
Does updating old certificate is necessary?

Last post by roshanravan « Mon May 20, 2024 6:04 pm
Replies: 2
by Cognition » Mon May 20, 2024 11:13 am

2 Replies

12806 Views

Last post by roshanravan
Mon May 20, 2024 6:04 pm
Adjustments on facetron machine

Last post by wilsonintexas « Sun Mar 10, 2024 1:38 pm
Replies: 4
by wilsonintexas » Fri Mar 08, 2024 7:53 pm

4 Replies

17897 Views

Last post by wilsonintexas
Sun Mar 10, 2024 1:38 pm
Garnet types

Last post by Dioptase « Sat Feb 24, 2024 12:10 am
Replies: 28
by ByE » Fri Feb 09, 2024 11:33 pm
1

2
28 Replies

30219 Views

Last post by Dioptase
Sat Feb 24, 2024 12:10 am
Color changing garnet ?

Last post by Owlx « Thu Feb 22, 2024 2:49 pm

by Owlx » Thu Feb 22, 2024 2:49 pm

0 Replies

19408 Views

Last post by Owlx
Thu Feb 22, 2024 2:49 pm
Largest Gem Ruby Ever Found in Mozambique

Last post by GemCollector9 « Sat Feb 03, 2024 12:24 am
Replies: 11
by Barbra Voltaire, FGG » Sat Dec 03, 2022 2:21 pm

11 Replies

19959 Views

Last post by GemCollector9
Sat Feb 03, 2024 12:24 am
Myanmar or Mozambique

Last post by Barbra Voltaire, FGG « Fri Feb 02, 2024 12:57 pm
Replies: 3
by Jeweliah » Tue Jan 23, 2024 11:40 am

3 Replies

8570 Views

Last post by Barbra Voltaire, FGG
Fri Feb 02, 2024 12:57 pm
Polish aqua heard about adamas system wuestions about it

Last post by wilsonintexas « Sun Dec 31, 2023 9:36 pm
Replies: 2
by wilsonintexas » Sun Dec 31, 2023 12:56 pm

2 Replies

7177 Views

Last post by wilsonintexas
Sun Dec 31, 2023 9:36 pm
A 45 ct faceted Emerald

Last post by Barbra Voltaire, FGG « Sun Dec 31, 2023 12:26 pm
Replies: 10
by Mohmand » Wed Dec 27, 2023 2:44 pm

10 Replies

8282 Views

Last post by Barbra Voltaire, FGG
Sun Dec 31, 2023 12:26 pm
Demantoid Garnet Inclusion

Last post by Mohmand « Sat Dec 30, 2023 2:08 am
Replies: 5
by P. Siroospour » Thu Dec 28, 2023 3:26 pm

5 Replies

6765 Views

Last post by Mohmand
Sat Dec 30, 2023 2:08 am
Ruby Deposits: A Review and Geological Classification

Last post by Mohmand « Mon Sep 11, 2023 4:12 am
Replies: 1
by Barbra Voltaire, FGG » Sat Sep 09, 2023 1:02 pm

1 Replies

12274 Views

Last post by Mohmand
Mon Sep 11, 2023 4:12 am
A strange stone I found

Last post by mandalf « Thu Aug 24, 2023 1:11 pm
Replies: 11
by mandalf » Tue Aug 01, 2023 2:40 pm

11 Replies

14138 Views

Last post by mandalf
Thu Aug 24, 2023 1:11 pm
Tanzanite Spectrum

Last post by 1bwana1 « Mon Aug 07, 2023 11:54 am
Replies: 15
by Edmundo1948 » Mon Jul 31, 2023 9:32 am
1

2
15 Replies

20912 Views

Last post by 1bwana1
Mon Aug 07, 2023 11:54 am
Imperial Jade and the Chelsea Filter

Last post by Debbie K « Fri Aug 04, 2023 5:00 pm
Replies: 29
by Leigh » Tue Aug 21, 2007 9:29 am
1

2
29 Replies

42872 Views

Last post by Debbie K
Fri Aug 04, 2023 5:00 pm
introduction

Last post by Edmundo1948 « Tue Aug 01, 2023 5:13 pm
Replies: 4
by Edmundo1948 » Mon Jul 31, 2023 9:11 am

4 Replies

8602 Views

Last post by Edmundo1948
Tue Aug 01, 2023 5:13 pm
Dark Blue Beryl from Pakistan

Last post by Mohmand « Tue Aug 01, 2023 1:53 pm
Replies: 11
by Barbra Voltaire, FGG » Sat Oct 26, 2019 12:26 pm

11 Replies

13692 Views

Last post by Mohmand
Tue Aug 01, 2023 1:53 pm
An Indicolite Tourmaline?

Last post by Mohmand « Sat Jul 29, 2023 4:11 pm
Replies: 5
by Mohmand » Sat Jul 29, 2023 7:15 am

5 Replies

13631 Views

Last post by Mohmand
Sat Jul 29, 2023 4:11 pm
How Rare Is This Large 24ct Ceylon Moonstone?

Last post by Barbra Voltaire, FGG « Tue Jul 04, 2023 6:33 pm
Replies: 22
by TonyBram » Sun Jun 25, 2023 2:55 pm
1

2
22 Replies

27912 Views

Last post by Barbra Voltaire, FGG
Tue Jul 04, 2023 6:33 pm
Mahenge Spinel

Last post by mehoose « Sat Jun 10, 2023 9:05 am
Replies: 4
by bunyip96 » Tue Dec 28, 2021 12:49 am

4 Replies

10713 Views

Last post by mehoose
Sat Jun 10, 2023 9:05 am
NATURAL ZIRCONS AND SAPPHIRES FOUND TOGETHER

Last post by mehoose « Sat Jun 10, 2023 8:57 am
Replies: 4
by Benshak Myles » Tue Mar 14, 2023 2:53 pm

4 Replies

9825 Views

Last post by mehoose
Sat Jun 10, 2023 8:57 am
Smithsonian Unveils Superb Lion of Merelani Gem

Last post by mehoose « Sat Jun 10, 2023 8:55 am
Replies: 5
by Barbra Voltaire, FGG » Thu Apr 27, 2023 12:46 pm

5 Replies

9535 Views

Last post by mehoose
Sat Jun 10, 2023 8:55 am
A huge zircon both have tenebrescent and color change effect

Last post by Sanssouci « Wed May 31, 2023 4:47 pm
Replies: 3
by Sanssouci » Tue May 30, 2023 2:47 pm

3 Replies

8616 Views

Last post by Sanssouci
Wed May 31, 2023 4:47 pm
Need help with blue sapphire

Last post by 1bwana1 « Thu Apr 20, 2023 3:30 pm
Replies: 1
by Raerae_ » Thu Apr 20, 2023 1:13 pm

1 Replies

6704 Views

Last post by 1bwana1
Thu Apr 20, 2023 3:30 pm
spectrum of 2 tourmalines

Last post by 1bwana1 « Mon Apr 03, 2023 11:30 am
Replies: 10
by nasco » Fri Mar 31, 2023 1:50 pm

10 Replies

13184 Views

Last post by 1bwana1
Mon Apr 03, 2023 11:30 am
Mint Merelani and light Questions

Last post by nasco « Sat Apr 01, 2023 9:00 pm
Replies: 5
by Minx » Sat Nov 24, 2012 3:48 pm

5 Replies

8523 Views

Last post by nasco
Sat Apr 01, 2023 9:00 pm
need help to identify

Last post by Barbra Voltaire, FGG « Fri Mar 24, 2023 10:55 pm
Replies: 7
by bacjanaka » Fri Jan 20, 2023 9:47 am

7 Replies

8588 Views

Last post by Barbra Voltaire, FGG
Fri Mar 24, 2023 10:55 pm
RHODONITE VS FOWLERITE

Last post by Stephen Challener « Wed Mar 15, 2023 11:59 am
Replies: 1
by FL Rob » Wed Mar 15, 2023 4:21 am

1 Replies

6721 Views

Last post by Stephen Challener
Wed Mar 15, 2023 11:59 am
Bicolor Chrysoberyl Exist in nature?

Last post by Faceting 101 by Arya « Tue Feb 28, 2023 10:13 pm
Replies: 4
by JeanLi1986 » Sat Feb 25, 2023 10:59 am

4 Replies

10906 Views

Last post by Faceting 101 by Arya
Tue Feb 28, 2023 10:13 pm
Help please

Last post by Barbra Voltaire, FGG « Mon Feb 06, 2023 1:04 am
Replies: 2
by Chip » Mon Jan 30, 2023 12:19 pm

2 Replies

7460 Views

Last post by Barbra Voltaire, FGG
Mon Feb 06, 2023 1:04 am
FACET DIAGRAM ANGLES

Last post by salik « Wed Feb 01, 2023 3:04 am
Replies: 7
by firedrake » Sun Jun 26, 2022 9:41 am

7 Replies

9929 Views

Last post by salik
Wed Feb 01, 2023 3:04 am
Inclusion in ruby?

Last post by 1bwana1 « Tue Jan 31, 2023 3:44 pm
Replies: 2
by E H » Wed Jan 25, 2023 10:40 am

2 Replies

7211 Views

Last post by 1bwana1
Tue Jan 31, 2023 3:44 pm
Blue and brown stone.

Last post by 1bwana1 « Tue Jan 03, 2023 2:24 pm
Replies: 11
by confused » Thu Oct 27, 2022 10:36 pm

11 Replies

12526 Views

Last post by 1bwana1
Tue Jan 03, 2023 2:24 pm
An Update on Sapphires with Unstable Color

Last post by Barbra Voltaire, FGG « Wed Dec 28, 2022 2:24 pm

by Barbra Voltaire, FGG » Wed Dec 28, 2022 2:24 pm

0 Replies

25777 Views

Last post by Barbra Voltaire, FGG
Wed Dec 28, 2022 2:24 pm
Zoisite vs. "fancy" tanzanite

Last post by Stephen Challener « Tue Dec 27, 2022 7:47 pm
Replies: 5
by firedrake » Tue Dec 20, 2022 1:17 pm

5 Replies

8580 Views

Last post by Stephen Challener
Tue Dec 27, 2022 7:47 pm

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