Having a Geiger counter is helpful if your unsure as well It definitely helps. Great video!

Thanks for this video, that was my classic rookie mistake..l I lost my mind and bought ten pieces of manganese glass at the thrift store with my 356 in hand. It was a learning experience, I have yet to actually find a single piece of uranium, but I continue to hunt.

Thanks for this! It's the the first video I've seen demonstrating how 395/365 illuminate differently. We hear this all the time, but some folks still think 365 green illumination means uranium glass. 👌

Lead glass glows bluish-white. I was shining my blacklight in my drink glass collection and a set of highball glasses glowed that color.

I bought a 395 Black Light at the HmDpt big box store for $14.95 in 2022. They are available more often in the Spring. Why Spring? Here in the desert...they are used to locate scorpions.and other yuckies. A great tool to have for Vaseline/Uraniam glass verification. Plus, if you are a pet owner, it locates urine accidents and spit-up/vomit areas. (You'll be unpleasantly surprisef.)

Every piece of green depression glass in my house glows. Most of it was my grandmother's and was acquired by her in the 30's and 40's. I'm now convinced that all the classic green depression era glass glows.

I am a subscriber from your other channel. I had never heard of this type of glass until a couple weeks ago when I got my first piece of uranium glass. Now I am seeing it everywhere and you made this channel. Bizarre

Popped over and subbed, Speg. Once upon a time, the wife and I had some.....years ago... and one of us ( me) decided that I wanted to add to my vintage Coca Cola collection...you see where this went. Anyway, fun seeing the new channel! Take care, be safe and God bless! I'll be looking for more content....and more Coin Guy videos, too! 🇺🇸

This was an excellent video thank you for explaining it!!

Thanks Speg. Appreciate the lesson. On the search now.

Interesting video. Thanks for the insight.

Eeeek that manganese glow is an ugly yellowish green. I would cringe and put it back not even knowing it was manganese doing it. I adore the bright green glow of actual uranium glass.

Love it. Good info.

Very nice video. Thank you.

Thank you!

In my experience a lot of people do not care why the glass glows, they just want the glowly glass. Some are purists but not many.

365 nanometer, nm, black light can be dangerous to your eyes or anyone else standing close by. The 395 or 400 nm wavelengths are not. It is safer to just use the 395 or 400 nm wavelengths to avoid any problems. If you have a public display, stay with the safer 395 or 400 nm wavelengths lights. The 395 or 400 nm wavelengths are super cheap, and you can see glass fluorescing easily. Also, if you price strip lighting in the 365 nm wavelength, they are very expensive, hundreds of dollars, and they are dangerous to the public should you have a public display. The 395 or 400 nm wavelengths blacklight strips are super cheap and safe. That is my understanding.

Thank you for the guidance! I’m just now finding out about this glass. Do you recommend 51 or 100 LED with the Vansky flashlight?

Is there a good online store to buy Uranium Glassware? My stepson is collecting it now and I would like to get him some. Thank you for the advice and sharing good video. Have a great day.

I’ve got a few Kanawha amberina water bottles that have manganese in them and it really brings the piece to life. Which I say is a desirable trait. The subtle orangish yellow areas pop out.

I just found a white anchor hocking heart shaped bowl that glows completely green under 365nm, but only glows with the 395nm if i press it flush with the piece! Otherwise it just gives that purple glow from afar with the 395nm. I ended up putting my geiger to use and it went up to 100cpm and didnt fall lower than 90cpm. Im wondering if its a glaze, definitely uranium though!

Great info. I did not know the 365/395 difference. Wonder if they make a smaller 395 light to carry and check glass.

Thank you for this I ordered a 395 black light to be correct when determining, I was going to my glass I like to collect and found one was glowing pink under the 365 so now I'm on a discovery lol I get mixed Info on the pink glow so if you happen to know why something Crystal would glow pink or I'm just assuming it's Crystal lol thank you again

Great videos! Very educational. In your video titled ; (THIS matters when searching for Uranium glass! Buyer Beware!), you shine the 395 on what looks like a creamer bowl with a flaired top at the 22 second to 30 second mark. Do you have any information on that bowl and the design on it? My mother has a large uranium planter bowl/vase with that design and I have been trying to identify it with no success. When I saw that on your video I almost crapped myself! Any information would be Greatly appreciated. I could send pictures of it if there is a way to contact you safely.

What is the composition of glass, which appears blue in visible light and produces dim purple-brownish luminescence under UV?

Well done Speg! :-)

Does yellow canary glass (vaseline) glow brighter than green uranium glass?

Now thats solved. I'm preparing for a new adventure. She..as in the wife loves to stop at any and all antique, thrift you name it. All I ever cared about was a deal on silverware. I'll sneak this 1 in. Add some fun to our hunts again.

Thanks for the tip they have the cheap ones on amazon in 395nm as well and I don't trust the reviews so saw some pictures of uranium glass and regular milk glass in the review pictures so I bet it's really 395mn for $6.99.

Are spirit Halloween uv bulbs 365 or 395?

Manganese glass is pre 1915

If a piece of glass has enough manganese in it it will glow under 395, but as you have shown it’s a more mucky sludgy green glow. One of the best glows is from good old Vaseline glass from around the late 1800 early 1900, a pease of Davidson Pearline is a good example.

Thanks Speg, another rabbit hole I’m down that my wife is mad about. How comfy is your couch?

Wonder if my eyes going bad. The round covered sugar bowl in the center never appears to glow with either light from my viewpoint.

That milk glass with manganese boat is a Remember The Maine a commemorative for the Spanish American War.

I just use my Radiacode Dosimeter.

A proper geigercounter may help..

You are comparing a 395 without a visible light filter to a 365 with a filter. I think this is the main reason you are seeing such a drastic difference in fluorescent response with your old clear glass. You are getting some visible blue light wash from the 395 due to the lack of visible light filter. You don't see the green fluorescence because it is washed out by visible unfiltered light. With the higher concentration of uranium the glass is so bright it outshines the blue wash. 365 is a higher energy, shorter wavelength light than 395 so for minerals or glass that are more responsive to that wavelength they will appear brighter under 365. Where did you learn manganese causes a weak green fluorescence? Interesting. I hadn't heard this before. I think old glass was not very pure and when they intended to have clear glass it may have some trace uranium in it. No one back then had a black light to know the difference. Thanks for the interesting video!! Liked.

You should finish the test with a dosimeter

So many errors... Where to begin? First of all, it's not, "spectrum", it's "wavelength". And its not, "black light", it's "ultraviolet". "Black light" specifically denotes a 365nm, tube-based, UV lamp. And leaving out, "nanometers", is not helpful. At least once you should be saying, "365 nanometers" so viewers have some idea of what the delineation indicates. Next, put your 395nm flashlight into a drawer as a spare (though 395nm is useful for making selenium and cadmium glass glow but they are less common. Save it for them). "Ultraviolet"means just that, that humans cannot see the emission. "But", you complain, "I can see plenty of light from the 395nm!" Yes you can, and that's the problem. You noted that some, "black light" was reflecting off of the white bowl you lamped. You can't see UV light. What you're seeing is the tons of visible, violet light emitted by 395nm LED's that you're seeing and that's why, even if an item has some glow to it, that glow is washed out by the visible light. Vaseline and U-glass glow nicely under 395nm, but the entire point is to see the glow from the UV, not from visible light. I have a couple of early, unfiltered Cree 365nm flashlights that actually emit a lot of BROWN light along with whatever UV they emit. Talk about useless! What Vaseline and U-glass collectors care about is the glow. Once you dump the 395nm light, using a properly filtered 365nm obviates all of the bizarre discussions of manganese or uranium. Who really cares what the doping agent is if it glows nicely? A properly filtered light is just that. The best UV LED's, such as Nichias, have a very narrow emission spectrum with the desired wavelength centered as a peak with a little bleed on both sides. But even with such a narrow output, the best results are still obtained by using a UV bandpass filter on the flashlight to remove as much of the visible light as possible. If you're using an unfiltered light, you're still not there. Now, you were stuck on 395nm and 365nm. But flashlights are now available in mid wave, (MW, 310nm) an short wave (SW 254nm). The white bowl that did nothing under 395nm (it actually did but you couldn't see it due to the visible light) and looked pale green under 365nm will be bright, powder blue under SW (MW, depending on the mix), glows a weak, dark purple. This is how my Westmoreland Hen-on-Nest milk glass reacts. Another option is to use a 405nm UV laser, cheap things easily found. Makes Vaseline and U-glass glows like a beacon and requires no filter because there is no emission spectrum: it's pretty much only at 405nm. The downside is that it lights up just a small spot, useless for enjoying items but not awful for determining what glows in shops and flea markets from 50' away.

10:20 This is selenium glass, and I hate you for having a piece of it when I have literally looked through thousands of items to try to find it but never finding a single piece. 😤

As a glassblower, I have never heard of clear glass getting some sun to it and turning it purplish brown... Sunlight doesn't change glass colors