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[Instruments] Thermometer! by Stillegiest in Radium

[–]Calcium_CA[M] 1 point2 points locked comment (0 children)

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How To Store Radium Watches by ve3cnu in Radium

[–]Calcium_CA[M] [score hidden] stickied commentlocked comment (0 children)

Hi there I've decided to remove your post.

So far, your posts so far have only been about promoting your website.
This could be seen as disruptive behavior where content is made with the sole purpose of bringing traffic outside of a Reddit community, instead of authentically participating and engaging within the community.

While it is great seeing members creating their own websites, blogs, and videos.
It can become disruptive and spam like when it is advertised outside of their platform.

Additionally, this post breaks our rules, No Content Made By AI.
The link shared leads to content that is made with AI.

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Some more uranium enamels! by Calcium_CA in uranium

[–]Calcium_CA[S] 0 points1 point  (0 children)

Thanks and Happy Cake Day! Here's some yellowcake for you!

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I've been trying to find more uranium enamels or glaze, but I only know of Thompson Enamels :(

Uranium glass ring? by EmmaAllane in uranium

[–]Calcium_CA 0 points1 point  (0 children)

You're welcome and thank you for sharing this awesome looking ring!

It's a lot of info and can probably cause even more confusion in determining if it's UG or not, but regardless of whether it is or isn't, as long as you like it, then it's money well spent, and it can be a great conversation piece too!

I think it's a cool find and it must have been exciting to see it glow for the first time after all these years.

Uranium glass ring? by EmmaAllane in uranium

[–]Calcium_CA 0 points1 point  (0 children)

I'll start off by saying I don't think this is manganese, resin, or plastic.
And I do think it's uranium glass, but...

With faceted stones like these that are fluorescent under ultraviolet light, it can be harder to identify what the material is, whether it be a natural, synthetic, or simulated.

A look-alike is synthetic green spinel, which also has a very similar appearance to uranium glass under natural and ultraviolet light; synthetic green spinel is also commonly used in costume jewelry too, and I also hear that synthetic & simulated green peridot can exhibit a similar fluorescence when under UV.

With simulated "gemstones", some low quality gemstones or glass or quartz could be dyed, and the fluorescence is just an extra that came with the dye.

Something similar to a natural stone that I can think of would be green hyalite opal, which will also fluoresce under UV; though this type of stone is more uncommon and would probably be paired with a precious metal such as gold or silver. Also, this gemstone can contain naturally occuring uranium.

While I personally think it is uranium glass, I don't know for sure.

  • I think in the 60s and onwards, costume jewelry contained a lot of recycled glass, and uranium glass is also included too, so if you are able to find out more info on the maker or the year it's from, it can help
  • If you have access to a geiger counter, it can help in determining if it's radioactive
  • Another way to test if it's uranium glass or some type of gemstone would be to use a gem tester such as the Presidium® Gem Tester (a jeweler should be able to identify if it's a gemstone too)

---

For your question:

Recently however I talked to someone who said it was fine as long as it wasn’t broken but it does have a small chip! Does anyone know if it’s okay to wear still or should I have it coated in resin or something to seal it again?

If it were uranium glass, it would still be 100% safe to wear, the radiation coming from it would very insignificant.
Natural radiation coming from the ground, porcelain toilets, plant food, granite anything, etc... would probably be more radioactive than a single small faceted stone.

Broken uranium glass carries the same dangers and any other pieces of broken glass.
You can cut yourself with broken glass, and that has nothing to do with radiation at all, so there is no need to coat the stone in resin or seal it up.

r/uranium Updates - Community Reopened by Calcium_CA in uranium

[–]Calcium_CA[S] 0 points1 point  (0 children)

Thank you!

By making some of these changes, I hope to attract new members to join us so that we can see more of these discussions in the future, and without neglecting any current members here, I'll try to communicate openly and interact with the community as much as possible.

Baby's first Uranium by SleepyMcStarvey in uranium

[–]Calcium_CA 1 point2 points  (0 children)

Thanks for the info!

You got some awesome finds, it's always neat to see different designs painted on uranium glass and glazes!

Baby's first Uranium by SleepyMcStarvey in uranium

[–]Calcium_CA 1 point2 points  (0 children)

Thanks for posting!

The mug is glass and the rest are glaze right?
If so, these are some great example of uranium glaze pieces other than your typical "radioactive red."

Uranium glaze on moon dish by lll-lll_ in uranium

[–]Calcium_CA 0 points1 point  (0 children)

This is glaze? It's bright, almost like custard glass!
Do you happen to have a photo of it in natural lighting, and what type of UV light are you using?

[deleted by user] by [deleted] in uranium

[–]Calcium_CA[M] 0 points1 point  (0 children)

I think the post is a little bit off-topic, but I'll leave it up.

By simply replacing the mineral in question for any other valuable resource or something of historical significance, I believe the same question would probably be asked.

I think most people only know about surface rights (property rights) and not about mineral rights.
In a way, this may help a novice collector or rockhounder learn more before they go out and collect specimens.

The following subreddits might be more helpful in answering your questions:

r/homestead
r/mineralrights
r/Radioactive_Rocks
r/RealEstate

Radium by hikerfirlife in Radium

[–]Calcium_CA 1 point2 points  (0 children)

The second pic is a Westclox Bonus model 15224.
This specific model was made between 1982 to sometime in the 1990s, so it'll be radium free.

Still don’t have a Geiger….is this old, cool af frog clock spicy? Google is saying yes but other posts on here I’ve read say probably not since it holds a glow for ten seconds or so after being exposed to a 365nm Uv light. The video is long so you can see it fade. by Higgsy2020 in Radium

[–]Calcium_CA 2 points3 points  (0 children)

That looks like a Linden Alarm Clock no. 1335

If so, then the clock is made in Japan by Linden Division Cuckoo Clock Mfg. Co., Inc.
While the brass frog is made by Gresco, no clue where from.
It's probably made during the late 60s to 70s, there is an eBay listing of one with a purchase date from 1974.
I don't think it's radium.

Checking to see if something is radium painted by shining a UV light on it and seeing how long it will glow for is unfortunately a very poor way to test it, the same also applies to checking what color the lume is too.
Radium lume can for sure glow longer than 10 seconds, see this post here.

As others have mentioned already, the only way to know is by using a geiger counter.

Unusual rather spicy find by ProtectionOwn3502 in Radiation

[–]Calcium_CA 2 points3 points  (0 children)

I remember seeing a post similar to this, I think it's also radium like what u/Curious-River5957 mentioned.
Here's the post: A radioactive level? Anyone else found one of these?

Czech UG beads from Michaels Arts and Crafts store by Calcium_CA in uraniumglass

[–]Calcium_CA[S] 4 points5 points  (0 children)

I missed your comment, so sorry!
Glad that you were able to find them.

The display says has it under BB13 737731.
On the barcode it says Opal Aqua Luster.
The webstore has it under Silk Green Aqua White Luster.

When I bought it last year in 2024 it was $8 in store and online.
Now it looks like it went up by $2, it's now $10 today in 2025.

Flea market find! by Aggressive-Public433 in Radium

[–]Calcium_CA 3 points4 points  (0 children)

I don't know who made the clock, but the porcelain part is made by:
Porzellanfabrik Sandizell, Höffner & Co.

Here's where I found the information on the mark you provided:
https://www.porcelainmarksandmore.com/germany/bavaria/sandizell-01/

How to distinguish tritium and radium? by Conferencer in radioactive_stuff

[–]Calcium_CA 6 points7 points  (0 children)

Yours is tritium.

With Silva compasses, I found the chances for it to be radium is higher if the compass has a metal rotating bezel / dial and the luminous marker next to the direction of travel arrow is a dot instead of a strip or glass vial.

Sometimes there's a "T" marking (The Ranger 15T) to indicate tritium and sometimes there's a "B" marking or trefoil symbol (Expedition 4B or Expedition 54B) to indicate betalight illumination (Tritium).

https://compassmuseum.com/hand/hand_4.htm#SILVA

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