I love fluorescence, so I would be happy by this new discovery, but I understand why others wouldn’t.
I agree... except... since flurescence is viewed as a negative, I would be afraid that if GIA and AGL started listing the entirety of the spectrum Wf and others wouldn’t stock anything that didn’t have “none” listed. It’s a double edge sword, at least for me. Right now I bank on the fact that I may get an AGL that lists “negligible” but get a stone that still has some (which has happened at least 50% of the time for me).I love fluorescence too. I prefer it. But if it affects pricing, the fact that AGL and GIA are dramatically ignoring part of the spectrum needs clarification by vendors at a minimum.
Not sure the model but it's a Craftsman from Lowe's. Not sure if youre in the States but it's in store for like$10What make and model UV flashlight are you using?
It's an I, so I honestly view it as an asset, as I see no stand alone tint. Was just suprisedWhat is the color ?
I would return it or upgrade to something else, this is not what you paid for.
https://www.lowes.com/pd/CRAFTSMAN-UV-LED-Handheld-Flashlight/1000492943"Craftsman from Lowe's"
Thanks. I have a 102-year-old house halfway between a Lowe's and a Home Depot, so I'm in one or the other every few days.
Re: Wavelength of UV light for viewing fluorescence in diamo
Hello jstarfireb. Congrats on the upgrade - and cool idea.
Good info from WMW and likely exactly what you needed to know. GIA uses both long-wave (@ 365 nm) and short-wave (@ 254 nm) but SW is mainly for lab ID purposes. Of course some specimens like the Hope Diamond do fluoresce and phosphoresce to SW so it's fun to check both aspects with any stone...but you're only looking for LW, I expect.
An appraisal-quality unit will have both (LW 366 nm SW 254 nm). The GIA store sells this for $879.
http://www.eickhorst.com/en/gemmological-instruments/uv-lamps/multispec/features/
I keep one of these Kassoy LWs next to my loupe in my briefcase. It's 380 nm. As WMW implied that will do just fine.
http://www.kassoy.com/9-uv-led-light.html
This may be even more up your daily-use-alley? Inexpensive UV keychain-lights. Listed at 370 nm (but ymmv).
http://www.photonlight.com/categories/LED-Flashlights/By-Brandhoton/?sort=bestselling
I've seen those Photon keychain-lights offered by diamond-tool sellers for a higher markup. When I have seen them used they appear to do well at fluorescence-excitement. For practical applications the $25 Kassoy is profoundly stronger, logically.
Photos next, please.