Sapphire Tutorial by Jewelry Forever
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5:55
Synthetics Corundum and Spinelby MrFracknight1,211 views- 1:48
How to Use a Refractometer for Gem Testing Model FGR-003by raregemstones5,159 views
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Nick Hodgson at the Bangkok Gem Showby alkalinewaterangel5,211 views
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Testing with Presidium Refractive Index Meterby presidiuminstruments952 views
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building a Polariscopeby catman723,417 views
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Loose Cubic Zirconia,CZ Stones and Created Gemstones China Wuzhou Manufactuer,Supplier and wholesaleby frgems497 views
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Spectroscopeby Optique30004,613 views
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Refractometry Demonstrated by Mark Niemczyk, PhDby mpnorganic1,545 views
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Amethyst: the common crystal!by Kendra2586397 views
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Gem Collector Tools - Dark Field Loupeby GemCollectorUK363 views
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The Spectrometerby bcitphysics9,407 views
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How To Buy Sapphire Jewelry Sets On A Shoestring Budgetby lankapaul949 views
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Testing with Presidium Gem Testerby presidiuminstruments2,019 views
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GemstoneSeparator.wmvby GTBill50222 views
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Spectroscopeby kosasihiskandarsjah12,153 views
Have you ever used a U.V. light to check the gems ? It does work to spot them in the dark when you hunt for them at night ! Also check for chips in glass they look like rings ! No Crystal structure to glass ! All glass look to perfect, Must look for the lattice in your gems ! That's the true beautiful symmetry of order that moves me :-) YES ! I collect rare gems stones like Phosphophyllite, very beautiful I can't help myself ! I get lost in every lattice point if you know what I mean :-)
wackattack180 8 months ago
Very beautiful indeed. But....Technical terms misused. No R.I. liquid used on the hemisphere. I didn't see a light source either. Glass is singly "refractive", not reflective. We would also use a dichroscope to see moderately strong pleochroism.
bsdtector 9 months ago
nyce tutorial thnx and u r so beautiful....
netasif2009 10 months ago