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Gem Related Discussion

About the Gem Related Discussion category (3)
Which certificate? (3)
Color change Tourmaline Usambara (9)
Has anyone tried to use the digital refractometers (7)
Sphalerite? (4)
Identify me (5)
Setting a new minimum for quality inclusion. I give you gem quality Baddeleyite (4)
Grading Gem Carvings Article (1)
Buying Gemstones Online - Safe or Unsafe? ( 2 ) (22)
Having trouble trying to find out what this is worth (7)
Identify this gem for me, please (12)
Seeking info re Amber trade around the 9th century? (2)
Laser Drilled Diamonds (4)
Identify gemstones (5)
"no name" refractometer (11)
Question about unknown RI Fluid (10)
Jeff Graham Stones (1)
I started a new show called World of Faceting Machines (2)
5.5 carat Emerald dilemma ( 2 ) (29)
Mineral, Crystal or Glass (7)
IGS Practical Exam (5)
Black Opal? Mounted in freeform mount by MOGES (11)
Price Guide Is Way Above Market Prices (19)
I'm Stumped By What This Is! (3)
Gem faceting course (4)
Pezzottaite any info out there? (8)
Looking for an Advice in Starting Gems business in U.S. without middle men (6)
Chrysocolla chalcedony gem silica 台湾蓝宝 (2)
Interesting Stones (2)
Moonstones? (3)