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Reference Desk
Is vaseline glass radioactive? Yes, mildly
It contains uranium, it glows under a blacklight, and the only instruction the EPA gives is about eating and drinking.
Yes, mildly. Vaseline glass is glass coloured with uranium oxide — typically 0.1% to 2% by weight — so it is measurably radioactive and glows green under ultraviolet light. The US EPA says radioactive antiques “are usually not a health risk if they are in good condition”, but tells people not to use vaseline glass to hold food or drink, because a chipped piece can shed uranium particles into what you are eating.
Last verified 16 September 2026 against EPA and ORAU guidance and 343 live US listings for uranium and vaseline glass
What the uranium is doing in there
Uranium was a glass colourant long before it was anything else. Adding uranium oxide to a batch produces a yellow-green that fluoresces under ultraviolet light, and glassmakers used it heavily from the nineteenth century into the 1940s. Vaseline glass is the collector name for the pale yellow-green version, after the petroleum jelly it resembles; uranium glass is the broader term. Typical pieces contain roughly 0.1% to 2% uranium oxide by weight.
The identification test is the same one dealers use and it needs no equipment beyond a torch: in a dark room, under a UV lamp, uranium glass glows a strong green. Ordinary yellow-green glass does not. That is the whole test, and it is why almost every listing photograph of this material is shot under blacklight.
What the public-health sources actually say
We are not a health authority and will not pretend to be one, so this section reports what they say and quotes their key words.
The US Environmental Protection Agency states that antiques containing radioactive materials “are usually not a health risk if they are in good condition”, and gives one specific instruction: not to use “ceramics like antique orange-red Fiestaware or Vaseline glass to hold food or drink”, because they can chip and you could swallow particles of uranium with what you eat or drink. The agency describes the emission as very low-level radiation that can register on a hand-held Geiger counter held close to the object.
Read the shape of that advice, because it is the part people get backwards. The concern the EPA names is ingestion from a chipped or damaged piece, not exposure from a piece sitting on a shelf. That is why “is it safe to own” and “is it safe to drink from” have different answers, and only the second one is a no.
For anyone who wants the dosimetry rather than the guidance, the Oak Ridge Associated Universities health-physics museum keeps a page on vaseline and uranium glass with measured dose rates, and the published regulatory assessment of exempt source materials puts the estimated dose to someone handling such items at a small percentage of an average American’s annual background exposure. We are citing those rather than computing anything ourselves: we own no dosimeter and have measured nothing here.
Keep identifying
What it costs, and where the listings are
Searching uranium glass in the US affiliate catalogue this morning returned 233 live listings, every one of them from Poshmark, at a $40.00 median. The middle half of that shelf runs $25.00 to $70.00, and the dearest row is a $425.00 Juliana necklace.
| Search | Live US listings | Median ask | Range | Where they come from |
|---|---|---|---|---|
uranium glass | 233 | $40.00 | $15.00 – $425.00 | 1 retailer: Poshmark |
vaseline glass, glassware rows only | 110 | $39.99 | $8.99 – $350.00 | 2 retailers, led by Replacements Ltd. |
One structural point a buyer should know: the uranium-glass shelf in this catalogue is a resale shelf, and it is mostly jewellery — beads, earrings, necklaces — not tableware. All 233 rows report as in stock, which on a peer-to-peer marketplace means the listing is live rather than that a warehouse holds one; those platforms delist rather than mark down, a pattern we have found in every lane we have measured it in.
The search itself is a trap, and here is its size
If you search vaseline glass rather than uranium glass, most of what comes back is petroleum jelly. Of 276 US rows returned by that phrase today, 166 were lip balm, body lotion and healing jelly — Vaseline the brand — at a $5.99 median, against $39.99 for the glassware rows. The cheapest row in the whole pull is a $0.50 tub of lip therapy.
This matters beyond the joke. A price quoted from an unscreened “vaseline glass” search would be a blend of antique glass and drugstore moisturiser, and it would look plausible: a median in the low tens of dollars, no error, no warning. We screen by requiring the word glass in the title and excluding the petroleum-jelly product words, and we publish both halves so you can see what the screen removed.
Method, and what this cannot show
Two keyword searches, uranium glass and vaseline glass, against the CJ shopping-product API on 16 September 2026, US advertisers, three pages of 100 each, deduplicated on retailer, title and destination URL, then filtered on each row’s own country field: 233 and 276 US rows. The vaseline rows were split by a title screen — must contain glass, must not contain a petroleum-jelly product word — leaving 110 glassware rows and 166 jelly rows. Asking price is the sale price where published, otherwise the list price; peer-to-peer asks at or above $500 are excluded as seller placeholders, which is a standing rule here.
What this cannot show. It cannot tell you the uranium content of any individual piece, which varies and which we did not measure. It cannot confirm that a listing described as uranium glass actually fluoresces — nobody at this desk has held one of these objects. And it is not health advice: the safety statements above are the EPA’s words, and anyone with a damaged piece or a specific worry should go to the source rather than to us.
Sources checked for this page
- Radioactivity in Antiques — US Environmental Protection Agency
- Vaseline and Uranium Glass — ORAU Museum of Radiation and Radioactivity
- Uranium glass — Wikipedia
Frequently asked
Is it safe to keep uranium glass in the house?
The EPA says antiques containing radioactive materials are usually not a health risk if they are in good condition. Its specific warning is about using them for food or drink, not about keeping them.
Can you drink from vaseline glass?
The EPA advises against it: do not use antique orange-red Fiestaware or Vaseline glass to hold food or drink, because they can chip and uranium particles can be ingested.
How do I know if my glass is uranium glass?
Put it under an ultraviolet lamp in a dark room. Uranium glass fluoresces a strong green. Ordinary yellow or green glass does not, which makes this the one collector test that gives an unambiguous answer.
What is the difference between vaseline glass and uranium glass?
Uranium glass is any glass coloured with uranium. Vaseline glass is the collector name for the pale yellow-green version that resembles petroleum jelly. All vaseline glass is uranium glass; not all uranium glass is vaseline glass.
What does uranium glass sell for?
Across 233 live US listings on 16 September 2026 the median ask was $40.00, with the middle half between $25.00 and $70.00. That shelf is almost entirely secondhand jewellery rather than tableware.
How this page was made. Drafted with AI (Claude); not yet independently re-checked. How we work