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Research

Moderators: Stephen Challener, Conny Forsberg, Frank, Tim, Barbra Voltaire, FGG, Alberto

Topics		Author	Replies	Views	Last post
	Raman/PL results: Color origin of Red coral & conch pearl	mikko	2	14711	Sat Jun 22, 2019 3:38 am thresh
	Gemologist Finds Insect Entombed in Opal Rather Than Amber	Barbra Voltaire, FGG	8	5199	Wed Mar 06, 2019 12:43 pm Barbra Voltaire, FGG
	Non cuprian blue/purple tourmaline. Why is it rare?	bruce_tourm	0	1399	Wed Feb 27, 2019 12:58 pm bruce_tourm
	A Christmas wish, researching tourmaline color.	bruce_tourm	0	1253	Thu Dec 20, 2018 2:05 pm bruce_tourm
	Agate-like banding in Ethiopian opal--paper #2!	Stephen Challener	4	2723	Thu May 17, 2018 12:19 am ROM
	A Tale of Two Tourmalines.	bruce_tourm	1	2450	Sun Feb 25, 2018 4:27 am Marlow
	Testing a tourmaline with 1 wt. percent lead, Achroite.	bruce_tourm	1	1126	Fri Feb 23, 2018 12:48 pm Barbra Voltaire, FGG
	Recent Oyster find	bwebbman	6	1191	Thu Dec 21, 2017 4:08 pm bwebbman
	Interesting SEM images of gems at physicsforum	norman	3	1109	Mon Nov 13, 2017 6:51 pm norman
	Photoluminescence Spectra of Emeralds by Brian Thompson	Barbra Voltaire, FGG	0	1229	Thu Nov 09, 2017 12:55 pm Barbra Voltaire, FGG
	Moved: How to Burn Spinels Gem?	cashace	1	1828	Tue Sep 19, 2017 10:31 pm Barbra Voltaire, FGG
	CIE color comparison between cuprian and non cuprian tourma.	bruce_tourm	5	1237	Fri Sep 08, 2017 2:09 pm gembug
	Paternity test for emeralds	steinfroilein	5	1565	Sat Apr 15, 2017 6:31 pm desertgem
	Updated editions of all Blue Books of standards/nomenclature	Barbra Voltaire, FGG	0	1537	Mon Feb 13, 2017 4:31 pm Barbra Voltaire, FGG
	Trace elements in cuprian tourmaline from Mavuco Mozam.	bruce_tourm	2	1380	Wed Jan 04, 2017 8:47 pm bruce_tourm
	Trace Element characterization of tourmalines worldwide	Jason Barrett	6	3435	Fri Dec 16, 2016 1:13 am Tom Herman
	Marco Campos-Venuti: Course on Microcrystalline Silica	Barbra Voltaire, FGG	7	2459	Mon Dec 05, 2016 6:51 am Lefty
	Quasicrystals Anyone?	ROM	4	6042	Sat Mar 21, 2015 1:16 pm dchallener
	opal play of color to produce a cat's eye effect	facetwiz	5	2721	Mon Feb 23, 2015 6:56 pm Qld Barry
	Cairngorm	Doos	5	10140	Thu Oct 09, 2014 3:48 pm Roy
	Orientation and Cutting the Catseye Tourmaline	Ivanhoe	2	2978	Sat Mar 15, 2014 11:05 pm Ivanhoe
	Diamond plus	Dov	1	2374	Sat Jan 11, 2014 8:39 pm Julie Gowans-Poli
	OOPS!	ROM	1	2276	Fri Jan 03, 2014 9:26 pm jimsfault
	Diamond Oceans Possible on Uranus, Neptune	Barbra Voltaire, FGG	9	4252	Thu Jan 02, 2014 1:11 am Qld Barry
	Raman/PL results: Detecting HPHT treatment of type IIa Dia	Alberto	13	5364	Wed Sep 11, 2013 12:12 pm Tim
	Modified Tourmaline	Megatastic	10	7161	Wed Jul 10, 2013 11:51 pm Barbara O. Ellis
	A little piece of "research" that caught my eye...	jimsfault	3	3176	Wed Jul 10, 2013 11:46 pm Barbara O. Ellis
	Raman/PL Results: Jade types and polymers detection	Alberto	1	3382	Sun May 12, 2013 7:25 am Lee Little
	Study on corundum crystals from Sweden	Chrysos	6	3435	Fri Apr 12, 2013 10:34 am Barbra Voltaire, FGG
	Raman/PL results: Det. color origin of cult.red FW pearls	Alberto	0	2521	Thu Apr 04, 2013 10:45 am Alberto
	Raman/PL results: Characterizing emerald types	Alberto	9	4220	Wed Jan 23, 2013 1:33 am Bill Hanneman
	GO Joint Research Project I... [ Go to page: 1, 2 ]	Ux4	17	28539	Fri Oct 26, 2012 2:08 pm Frank
	Raman/PL results: Spinels	mikko	7	4182	Thu Sep 27, 2012 5:32 pm HHelton
	Identification of Blue spinel with colored filters/UV	Osman khattak	13	4462	Tue Sep 25, 2012 7:37 pm jimsfault
	Digital Refractometer - Soliciting Input [ Go to page: 1, 2, 3 ]	jleb	38	37378	Tue Aug 07, 2012 1:50 pm Alberto
	NIR absorbance spectra of tourmaline [ Go to page: 1, 2, 3 ]	Brian	33	16193	Mon Oct 31, 2011 3:02 pm Brian
	UV-Vis and FTIR resources?	pattarat	2	3290	Fri Oct 14, 2011 5:33 am pattarat
	more tourmaline NIR [ Go to page: 1, 2 ]	Brian	18	6961	Wed Oct 05, 2011 9:46 am Brian
	Gemstones Identification	zen	11	5185	Wed Aug 31, 2011 5:09 am zen
	Identification of Black diamond	zen	3	5297	Sun Aug 28, 2011 6:37 am cascaillou
	chrome tourmaline [ Go to page: 1, 2, 3 ]	Brian	40	14212	Fri Jul 22, 2011 3:58 pm Brian
	V3+ as colorant in gemstones (french)	ethoreux	0	3131	Sun Jul 10, 2011 4:32 am ethoreux
	diamond	Brian	14	17062	Thu May 26, 2011 2:08 pm Frank
	iPhone App	lukass	3	3770	Fri Feb 11, 2011 7:06 pm Barbra Voltaire, FGG
	Hard and soft moissanite?	zen	14	7128	Thu Feb 10, 2011 12:14 pm Barbra Voltaire, FGG
	An Interview with George Rossman	Barbra Voltaire, FGG	0	3366	Tue Feb 08, 2011 10:50 pm Barbra Voltaire, FGG
	more ruby comparison [ Go to page: 1, 2 ]	Brian	19	16537	Tue Jan 25, 2011 2:48 am zen
	EASY way on Corundum family?	zen	5	3979	Fri Dec 10, 2010 12:35 am Bill Hanneman
	Inclusion of gemstones	zen	3	3591	Fri Dec 03, 2010 4:05 am zen
	Ruby Excitation Wavelengths	Keith.Conrey	7	5154	Thu Nov 04, 2010 7:54 pm Brian
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Barbra Voltaire's #1 Choices for Gemological Insturments

The Art and Science of Gems: Van Cleef and Arpels

Research

Barbra Voltaire's #1 Choices for
Gemological Insturments

The Art and Science of Gems:
Van Cleef and Arpels