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Post by Starguy on Mar 10, 2021 23:05:19 GMT -5
I was randomly shining my uv light on some of my collection. I shined it on one of my Idaho star sapphire crystals and was pleasantly surprised by what I saw. gemfeller Rick did you know they would do this? photo under regular light.  photo under uv light.  |
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RWA3006
Cave Dweller 
Member since March 2009
Posts: 4,596 
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Post by RWA3006 on Mar 10, 2021 23:32:06 GMT -5
Pretty cool. Is it rare or common for these to fluoresce?
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Post by Starguy on Mar 10, 2021 23:41:53 GMT -5
RWA3006 I shined the uv light on several star corundum crystals. They all did it somewhat. This one was the best of the five I shined it on. It’s a really vibrant red color.
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Post by miket on Mar 10, 2021 23:49:36 GMT -5
That is pretty awesome!
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Post by jasoninsd on Mar 11, 2021 2:36:20 GMT -5
That really is sweet!  I need to get a UV light and see if any my stones glow!  |
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Post by RickB on Mar 11, 2021 7:43:37 GMT -5
Chromium present in the crystals. I have some from NC that fluoresce.
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,596
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Post by RWA3006 on Mar 11, 2021 9:22:57 GMT -5
Some of the most fun I've had is dragging my wife through the Mojave at night with a fluorescent light. Besides glowing rocks we saw glowing scorpions and snakes.
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lookatthat
Cave Dweller
Whatever there is to be found.
Member since May 2017
Posts: 1,360 
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Post by lookatthat on Mar 11, 2021 9:44:16 GMT -5
If you've got some ruby zoisite around, check out that glow!
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electrocutus
spending too much on rocks
Member since October 2020
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Post by electrocutus on Mar 11, 2021 10:15:14 GMT -5
That really is sweet! I need to get a UV light and see if any my stones glow! I just purchased a small jeweler's magnifying glass with both white LED and UV lights. You see pretty cool details :-) |
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lookatthat
Cave Dweller
Whatever there is to be found.
Member since May 2017
Posts: 1,360
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Post by lookatthat on Mar 11, 2021 14:44:02 GMT -5
I collected some Hackmanite at Mt. Ste. Hilare, Quebec a few years ago. Wow, does that stuff glow!
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lookatthat
Cave Dweller
Whatever there is to be found.
Member since May 2017
Posts: 1,360
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Post by lookatthat on Mar 11, 2021 14:49:37 GMT -5
If you've got any Ruck's Pit calcite, check that out. Some even glow in the dark(briefly) after black light exposure.
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Post by Starguy on Mar 11, 2021 17:08:03 GMT -5
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Post by jasoninsd on Mar 11, 2021 18:44:20 GMT -5
Brent, thank you for posting this! That's a whole lot less expensive than I thought it'd be! I could see having decent range if someone was going to be using it when out hounding, but at home I think this would be ideal! |
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Post by Starguy on Mar 11, 2021 18:57:36 GMT -5
jasoninsdHey Jason. I just ordered one of these for around $60. I’ll let you know how it works. It should have a lot more range.
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Post by jasoninsd on Mar 11, 2021 19:27:26 GMT -5
That one shot where it showed the paint containers from 20 feet away - with the regular lights on, showed just how powerful this bad-boy seems to really be! It looks decent enough to keep in the backpack while out hounding. I'll be curious to know your thoughts on it once you get it. |
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Brian
fully equipped rock polisher
Member since July 2020
Posts: 1,512
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Post by Brian on Mar 11, 2021 20:29:09 GMT -5
That UVBeast looks like a fun toy! I have a little UV flashlight that has been a blast to play around with. That one is in a whole other league.
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,596
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Post by RWA3006 on Mar 11, 2021 20:52:13 GMT -5
Your UV experience can never be considered to be complete until you've shined it in a public restroom or a motel room.
I'd call it the antithesis of lighting up Starguy's corundum.
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Post by Starguy on Mar 11, 2021 23:12:31 GMT -5
RWA3006Looking in a public restroom would probably give me a heart attack. Have you seen any scorpions when you took your wife out with the uv light? I don’t think that would bother my wife too much but my daughters would probably freak out.
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,596
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Post by RWA3006 on Mar 12, 2021 7:57:09 GMT -5
Starguy one spring I camped in the Turtle Mountains South of Needles, California and we went out at night with the UV light and within five minutes we found four scorpions within a hundred yards of our camp site. Next morning we were careful to look in our boots before putting them on.
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gemfeller
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Member since June 2011
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Post by gemfeller on Mar 12, 2021 13:13:45 GMT -5
I was randomly shining my uv light on some of my collection. I shined it on one of my Idaho star sapphire crystals and was pleasantly surprised by what I saw. gemfeller Rick did you know they would do this? Yes - fluorescence is a standard test for ruby. It's caused by the presence of chromium but the amount varies. Burmese rubies are very strongly fluorescent but Thai rubies, which contain a large proportion of iron in addition to chromium, are much less so. However fluorescence is generally an unreliable test for corundum because its chemical properties vary so much. The link below goes into detail for those interested. www.gemstones-guide.com/Ultra-Violet-Fluorescence.html |
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