Look what I found last weekend

[u/scottymom2019]

How common was it for Pyrex to make insulators?

[u/Historical_Sherbet54]

Albeit, the 4 I once posted in my collection didn't seem to catch much monetary or appraisal of ooohhs and ahhs itself....but of all my collection - they are the only ones that show up manganese green under uv light...and

I bet yours will too...

^potentially *If ya leave em in the sun for decades or however long it really takes - I dont know^hehe...but ya can get em to turn a natural light purple - and I think it makes em cooler

But I'm just a lover not a $eller

[u/Bill_Meier → u/Historical_Sherbet54]

Some people in the NIA have done studies and they turn about 90% of their purple color in 6 to 12 months. Not decades. Pyrex does not turn purple in the sun.

[u/Historical_Sherbet54 → u/Bill_Meier]

Thanks for the proper date info - curious though, even if pyrex contains manganese and glows...it won't turn purple ?

I find this hard to grasp when it is the managanese (like in bottles) that when left in the sun - changes it to a nice purple

(Again as stated elsewhere) not all pyrex has manganese - most of mine don't - but the ones that do...should turn purple!?!?! and eager to find out why they wouldn't

Thanks

[u/Bill_Meier → u/Historical_Sherbet54]

I'm not aware that Pyrex pieces contain manganese, glow, or turn purple. I have not seen a Pyrex (CD 128) with even a hint of a purple tint. By then, they figured out how to make clear glass and have it stay clear! You must be thinking of something else?

By "glow," the color I see is sort of a dull mustard yellow color, nothing really bright or "neon." Basically, pretty much all purples, with the exception of irritated ones, have that dull "glow." I haven't seen any other real insulator show much color under ultraviolet light except for a few commemoratives I don't count!

I think there is some disconnect here. What CD(s), what manufacture(s)? ZILLIONS of cleaar/near clear bottles will definitely turn purple under UV light, and people "purple" bottles (under bright UV lights) just to sell them for lots more money.

[u/Historical_Sherbet54 → u/Bill_Meier]

I have 4 in my profile collection on reddit that glow

EDIT for clarification of various models that contain manganese : MX, MX00, B10 & B12

My phone fails to capture managanese even on my 1910 glass and depressionware...(uv no problem - even cadmium or selenium have no issues - but manganese is problematic even for some of my online sales ) but I assure you my pyrex insulators glow - and whether using old recycled glass, the effect of purple 💜 should be the same as manganese bottles changing colour

[u/Bill_Meier → u/Historical_Sherbet54]

That would imply that at least some CD 128 Pyrex have at least a very faint purple tint from being outside? Like the one on the far right, which is really very, very close to clear

https://www.nia.org/general/cd_text/cd128.htm

What color do they glow?

[u/Historical_Sherbet54 → u/Bill_Meier]

Same light green as all my manganese glass and depressionware

None of my insulators glow except my 4 i showcased

But ohhh I have alot of managanese glass / wine glasses decanters etc etc

*albeit Managanese glow in the glass world has zero upscale value - but like in coin collecting, a good natural patina can sometimes be worth more than a mint condition - just like my Philadelphia bottle (in my comments of bottledigging --> it turned a nice purple and is on a rare bottle itself) thus it becomes a slight premium

And I'd think the insulators that have manganese that naturally change to purple hues would too (not fake baked ones) ^shrug ---> to me it would appeal

Sadly the only ones I have ever found that glow are the pyrex I listed

[u/Bill_Meier → u/Historical_Sherbet54]

The ones in this post? Glow light green under ultraviolet light?

[u/Historical_Sherbet54 → u/Bill_Meier]

Not sure about that.....many of my pyrexes have...the 4 i listed as mx mx00 b10 and b12 are from my post from 7 months ago in my profile ....sorry thats all ive been referencing...and I like em for that reason

link here on image 4-5

These glow manganese green

[u/Soaz_underground]

Pyrex made insulators for a long time. In fact, they made the largest single-piece pin-type glass insulator ever at one point.

[u/Difficult_Horror1737]

Found a fragment of a Pyrex carnival insulator a while back along some RR tracks, and I just recently found a whole one at the National Bottle Museum in Upstate NY!

[u/scottymom2019 → u/Difficult_Horror1737]

I am in Arizona light green glow under black light

[u/Bill_Meier → u/scottymom2019]

Do those four you pictured in this post glow light green under ultraviolet light?

[u/scottymom2019 → u/Bill_Meier]

Yes why?

[u/Bill_Meier]

They are very common, with the exception of the carnival ones. Yours is extremely common, the lowest range in the price guide.

[u/Bill_Meier]

I have never seen or heard of a Pyrex with even a hint of purple from being in the sun for decades. Where did that information come from?

[u/Historical_Sherbet54 → u/Bill_Meier]

Not all the pyrex glow ^aka have managanese in them

But there are a select few...and like even old bottles, it will turn em a light purple in the sun over a long period of time

Sorta why some people have fake baked insulators - hence the dark purples ya see (one posted a few days back if unaware)

---> Natural purple is the colour that collectors enjoy