Contest, Quiz & Puzzle Section

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How Well Do You See Color?

Last post by abeck « Sat Aug 13, 2022 12:01 pm
Replies: 76
by Barbra Voltaire, FGG » Mon Mar 21, 2011 5:13 pm
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76 Replies

234870 Views

Last post by abeck
Sat Aug 13, 2022 12:01 pm
Sibling rivalry

Last post by cascaillou « Wed Jan 15, 2020 6:24 am
Replies: 2
by cascaillou » Mon Jan 13, 2020 10:32 am

2 Replies

27328 Views

Last post by cascaillou
Wed Jan 15, 2020 6:24 am
An impossible duo

Last post by cascaillou « Tue Jan 14, 2020 6:40 am
Replies: 12
by cascaillou » Sat Jan 11, 2020 3:53 pm

12 Replies

17384 Views

Last post by cascaillou
Tue Jan 14, 2020 6:40 am
Win a FREE Download of GT Pro!

Last post by Barbra Voltaire, FGG « Thu May 10, 2018 2:46 pm
Replies: 5
by GTP Bill » Thu May 10, 2018 10:32 am

5 Replies

10821 Views

Last post by Barbra Voltaire, FGG
Thu May 10, 2018 2:46 pm
where am i from?

Last post by aeronochflotter « Sun Feb 11, 2018 9:43 pm
Replies: 7
by aeronochflotter » Thu Dec 21, 2017 8:32 pm

7 Replies

11826 Views

Last post by aeronochflotter
Sun Feb 11, 2018 9:43 pm
Take the Quiz: Win a book!

Last post by JCD « Tue Oct 03, 2017 1:25 pm
Replies: 1
by Richard W. Wise » Sat Sep 02, 2017 10:30 am

1 Replies

7209 Views

Last post by JCD
Tue Oct 03, 2017 1:25 pm
A vivid yellow gem - what is it?

Last post by Marlow « Wed Aug 02, 2017 2:16 pm
Replies: 20
by Marlow » Sat Jul 29, 2017 5:48 am
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20 Replies

16561 Views

Last post by Marlow
Wed Aug 02, 2017 2:16 pm
Relative Density

Last post by Bill Hanneman « Fri Nov 11, 2016 4:00 am
Replies: 5
by Bill Hanneman » Sun Sep 20, 2015 11:04 pm

5 Replies

9305 Views

Last post by Bill Hanneman
Fri Nov 11, 2016 4:00 am
A relatively easy riddle

Last post by cascaillou « Fri Oct 21, 2016 2:09 pm
Replies: 6
by cascaillou » Wed Oct 19, 2016 3:18 pm

6 Replies

8743 Views

Last post by cascaillou
Fri Oct 21, 2016 2:09 pm
Gemstone Sudoku (1)

Last post by mehoose « Sun Oct 02, 2016 6:10 am
Replies: 6
by steinfroilein » Fri Sep 30, 2016 8:16 am

6 Replies

9537 Views

Last post by mehoose
Sun Oct 02, 2016 6:10 am
Gemology Tools Professional Quiz

Last post by GTP Bill « Mon Sep 12, 2016 4:12 pm
Replies: 17
by GTP Bill » Sat Sep 10, 2016 2:48 pm
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17 Replies

20538 Views

Last post by GTP Bill
Mon Sep 12, 2016 4:12 pm
Riddle of the keeper stone

Last post by cascaillou « Tue Apr 05, 2016 12:50 pm
Replies: 88
by cascaillou » Fri Mar 18, 2016 6:53 pm
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88 Replies

121081 Views

Last post by cascaillou
Tue Apr 05, 2016 12:50 pm
Riddle of the obscure gem

Last post by Dan&Sally « Tue Oct 06, 2015 12:48 am
Replies: 49
by cascaillou » Thu Mar 19, 2015 12:03 pm
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49 Replies

41025 Views

Last post by Dan&Sally
Tue Oct 06, 2015 12:48 am
what am I? ancient faceter?

Last post by nickatnight « Tue Mar 10, 2015 10:39 pm
Replies: 4
by nickatnight » Mon Mar 09, 2015 6:33 am

4 Replies

8770 Views

Last post by nickatnight
Tue Mar 10, 2015 10:39 pm
GO Gem Acrostic With Prize!

Last post by Robin Winter « Tue Oct 28, 2014 1:31 pm
Replies: 9
by Barbra Voltaire, FGG » Mon Oct 13, 2014 8:46 pm

9 Replies

10234 Views

Last post by Robin Winter
Tue Oct 28, 2014 1:31 pm
what is this?

Last post by Stephen Challener « Wed Jul 23, 2014 1:54 pm
Replies: 1
by JeffDavis » Wed Jul 23, 2014 12:22 am

1 Replies

7675 Views

Last post by Stephen Challener
Wed Jul 23, 2014 1:54 pm
Identify this synthetic material by inclusions picture

Last post by Barbara O. Ellis « Sun Mar 16, 2014 5:22 pm
Replies: 22
by Egor Gavrilenko » Thu Mar 13, 2014 12:15 pm
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22 Replies

19360 Views

Last post by Barbara O. Ellis
Sun Mar 16, 2014 5:22 pm
GO's Holiday Crossword

Last post by Barbra Voltaire, FGG « Wed Jan 29, 2014 11:25 am
Replies: 27
by Barbra Voltaire, FGG » Fri Dec 27, 2013 1:37 am
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27 Replies

22570 Views

Last post by Barbra Voltaire, FGG
Wed Jan 29, 2014 11:25 am
GO Design Competition - please vote!

Last post by Faceting 101 by Arya « Mon Aug 05, 2013 5:25 pm

by Faceting 101 by Arya » Mon Aug 05, 2013 5:25 pm

0 Replies

8184 Views

Last post by Faceting 101 by Arya
Mon Aug 05, 2013 5:25 pm
what do they have in common?

Last post by Alberto « Fri Aug 02, 2013 6:39 am
Replies: 27
by Egor Gavrilenko » Sat Dec 22, 2012 11:17 am
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27 Replies

28553 Views

Last post by Alberto
Fri Aug 02, 2013 6:39 am
Mysterious gem

Last post by maialetto « Mon Sep 24, 2012 7:40 pm
Replies: 15
by Egor Gavrilenko » Sun Sep 23, 2012 5:58 am
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15 Replies

21183 Views

Last post by maialetto
Mon Sep 24, 2012 7:40 pm
What am i?

Last post by Barbara O. Ellis « Tue Aug 28, 2012 6:37 pm
Replies: 12
by Jason » Thu Jun 02, 2011 10:24 am

12 Replies

14028 Views

Last post by Barbara O. Ellis
Tue Aug 28, 2012 6:37 pm
Diamond proportions quiz with prize!

Last post by Bill Hanneman « Tue Jan 24, 2012 9:16 pm
Replies: 33
by Egor Gavrilenko » Thu Dec 15, 2011 6:20 pm
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33 Replies

36947 Views

Last post by Bill Hanneman
Tue Jan 24, 2012 9:16 pm
New Year's Crossword

Last post by Barbra Voltaire, FGG « Thu Jan 12, 2012 11:32 pm
Replies: 4
by Barbra Voltaire, FGG » Wed Dec 28, 2011 4:15 pm

4 Replies

10561 Views

Last post by Barbra Voltaire, FGG
Thu Jan 12, 2012 11:32 pm
What am I?

Last post by Kerensky « Tue Nov 29, 2011 1:58 pm
Replies: 18
by Kerensky » Sun Nov 27, 2011 9:31 pm
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18 Replies

19521 Views

Last post by Kerensky
Tue Nov 29, 2011 1:58 pm
No kidding

Last post by maialetto « Thu Nov 24, 2011 5:08 pm
Replies: 5
by cascaillou » Fri Nov 18, 2011 4:28 pm

5 Replies

10002 Views

Last post by maialetto
Thu Nov 24, 2011 5:08 pm
What is this?

Last post by cascaillou « Thu Sep 15, 2011 3:01 pm
Replies: 4
by cnl » Thu Sep 03, 2009 5:39 pm

4 Replies

11293 Views

Last post by cascaillou
Thu Sep 15, 2011 3:01 pm
G&G eBrief Brainteser

Last post by Kerensky « Tue Sep 06, 2011 10:36 am
Replies: 20
by Barbra Voltaire, FGG » Mon Sep 05, 2011 3:41 pm
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20 Replies

18517 Views

Last post by Kerensky
Tue Sep 06, 2011 10:36 am
Using a refractometer

Last post by Kerensky « Sat Aug 13, 2011 4:08 pm
Replies: 3
by Kerensky » Tue Jul 05, 2011 8:55 am

3 Replies

9839 Views

Last post by Kerensky
Sat Aug 13, 2011 4:08 pm
New Crossword Challenge: GEM TREATMENTS!

Last post by Gemsandjewellery « Mon Feb 07, 2011 9:23 pm
Replies: 32
by Barbra Voltaire, FGG » Tue Jan 18, 2011 8:38 pm
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32 Replies

32163 Views

Last post by Gemsandjewellery
Mon Feb 07, 2011 9:23 pm
Christmas Contest

Last post by JREFaceting « Sat Jan 08, 2011 3:16 pm
Replies: 41
by earthling » Wed Dec 22, 2010 8:14 am
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41 Replies

35366 Views

Last post by JREFaceting
Sat Jan 08, 2011 3:16 pm
christmas contest II

Last post by mehoose « Sat Dec 25, 2010 2:34 am
Replies: 11
by stairman » Wed Dec 22, 2010 4:26 pm

11 Replies

13102 Views

Last post by mehoose
Sat Dec 25, 2010 2:34 am
WINNER ANNOUNCED!!! Kunzite Krossword Kwiz

Last post by skycritter « Tue Dec 07, 2010 11:06 am
Replies: 24
by Jason » Mon Nov 22, 2010 12:14 am
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24 Replies

22277 Views

Last post by skycritter
Tue Dec 07, 2010 11:06 am
The Ugly

Last post by lynxene « Fri Nov 19, 2010 2:35 am
Replies: 40
by cascaillou » Wed Nov 17, 2010 4:46 pm
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40 Replies

31177 Views

Last post by lynxene
Fri Nov 19, 2010 2:35 am
Whatizzit?

Last post by Kerensky « Sun Nov 14, 2010 5:53 pm
Replies: 7
by Jason » Sun Nov 14, 2010 3:01 pm

7 Replies

11243 Views

Last post by Kerensky
Sun Nov 14, 2010 5:53 pm
Hanneman's Guide to Affordable Gemology Crossword Challenge!

Last post by danielle « Sun Oct 31, 2010 6:48 am
Replies: 26
by Barbra Voltaire, FGG » Sun Oct 17, 2010 9:10 pm
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26 Replies

24949 Views

Last post by danielle
Sun Oct 31, 2010 6:48 am
Crossword Puzzle with Fabulous Prize

Last post by danielle « Tue Oct 19, 2010 2:04 pm
Replies: 27
by Barbra Voltaire, FGG » Fri Apr 23, 2010 10:50 pm
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27 Replies

25881 Views

Last post by danielle
Tue Oct 19, 2010 2:04 pm
GT Pro Quiz (for non-GT Pro owners) Win a FREE download

Last post by GTP Bill « Fri Oct 15, 2010 9:41 am
Replies: 11
by GTP Bill » Sun Oct 10, 2010 1:51 pm

11 Replies

13390 Views

Last post by GTP Bill
Fri Oct 15, 2010 9:41 am
Self Exam

Last post by Lennie « Wed Oct 13, 2010 5:49 am
Replies: 9
by roshanravan » Sat Oct 09, 2010 8:58 am

9 Replies

12155 Views

Last post by Lennie
Wed Oct 13, 2010 5:49 am
Win Quiz: Win GT Pro Download

Last post by Osman khattak « Wed Oct 13, 2010 4:56 am
Replies: 33
by GTP Bill » Sun Oct 10, 2010 10:17 am
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33 Replies

27911 Views

Last post by Osman khattak
Wed Oct 13, 2010 4:56 am
Whats Inclusion in this quartz?

Last post by roshanravan « Sun Oct 10, 2010 9:51 am
Replies: 21
by roshanravan » Sat Oct 09, 2010 8:19 am
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21 Replies

21187 Views

Last post by roshanravan
Sun Oct 10, 2010 9:51 am
Quiz for New Faceters - Books to winner

Last post by stevorocks « Wed Oct 06, 2010 6:15 pm
Replies: 13
by stevorocks » Sat Sep 11, 2010 12:48 pm

13 Replies

15376 Views

Last post by stevorocks
Wed Oct 06, 2010 6:15 pm
Mysterious inclusions 2 (quite difficult one)

Last post by Egor Gavrilenko « Mon Sep 27, 2010 5:04 pm
Replies: 20
by Egor Gavrilenko » Fri Sep 24, 2010 7:41 pm
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20 Replies

23381 Views

Last post by Egor Gavrilenko
Mon Sep 27, 2010 5:04 pm
Unique Colombian emerald inclusion.

Last post by Barbra Voltaire, FGG « Mon Sep 27, 2010 5:25 am
Replies: 7
by Gustavo » Sun Sep 26, 2010 1:25 pm

7 Replies

12471 Views

Last post by Barbra Voltaire, FGG
Mon Sep 27, 2010 5:25 am
Mysterious inclusions

Last post by Barbara O. Ellis « Wed Sep 15, 2010 4:20 pm
Replies: 13
by Egor Gavrilenko » Tue Sep 14, 2010 5:59 pm

13 Replies

15024 Views

Last post by Barbara O. Ellis
Wed Sep 15, 2010 4:20 pm
What am I?

Last post by Lukeness « Tue Jun 22, 2010 11:57 am
Replies: 15
by Jason » Mon Jun 21, 2010 6:54 pm
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15 Replies

21845 Views

Last post by Lukeness
Tue Jun 22, 2010 11:57 am
NOW GUESS! What are these???

Last post by cascaillou « Sun May 09, 2010 6:24 pm
Replies: 21
by salmangems85 » Mon Apr 12, 2010 12:08 pm
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21 Replies

22073 Views

Last post by cascaillou
Sun May 09, 2010 6:24 pm
?What the hey....

Last post by Gemsandjewellery « Tue Mar 09, 2010 11:57 pm
Replies: 27
by Ux4 » Thu Oct 20, 2005 12:35 am
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27 Replies

51345 Views

Last post by Gemsandjewellery
Tue Mar 09, 2010 11:57 pm
The Gemology Project Faceting Design Contest

Last post by mehoose « Mon Jan 25, 2010 8:18 pm
Replies: 1
by Barbra Voltaire, FGG » Mon Jan 25, 2010 5:03 pm

1 Replies

9383 Views

Last post by mehoose
Mon Jan 25, 2010 8:18 pm
Tourmaline Crossword Challenge!

Last post by gingerkid « Tue Jan 19, 2010 11:41 pm
Replies: 26
by Barbra Voltaire, FGG » Mon Jan 11, 2010 12:45 am
1

2
26 Replies

25572 Views

Last post by gingerkid
Tue Jan 19, 2010 11:41 pm

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