Didymium Safety Glasses

Looking for safety glasses for use with soft glass?

Didymium Safety Glasses

Didymium Safety GlassesDidymium safety glasses are known by a lot of names: rose didymium, rose glass, ACE, ACE 202, Phillips 202, even “purple glass,” but these all refer to the same didymium lenses.

Didymium safety glasses protect your eyes from harmful UV rays and sodium flare, both of which are associated with torch work when bead making and silver soldering.

Sodium flare is emitted by soft glass as well as borosilicate glass (pyrex) during torch work, but borosilicate releases IR in addition to UV and sodium flare. If you are working with both types of glass, you can use a green shade 2, 3, or 5 plastic clip-on flip-up to augment your didymium safety glasses. Our Green Ace Shade 3 and 5 work best for those doing torchwork exclusively with borosilicate or pyrex (scientific) glass.

If you’re shopping for didymium safety glasses, here’s what you need to know:

  • Didymium safety glasses are known as rose glass, rose didymium, ACE, Phillips Ace 202, and purple glass. These are all the same thing.
  • Didymium safety glasses protect you from UV radiation and sodium flare caused by beadmaking and silver soldering as well as other torchwork with soft glasses.
  • Didymium safety glasses will not protect you from IR emitted during torch work with borosilicate (pyrex; scientific) glass and during kiln observation. For these and other situations involving IR, you should augment your didymium glasses with plastic green IR clip-on flip-ups.
  • Didymium safety glasses are available in wraparound, prescription, standard, economy, and several other frame types.
  • Didymium safety glasses are also available with plastic lenses (traditionally, they are glass) and in plastic clip-on flip-ups.

If you are doing any type of torchwork with soft glass or silver soldering, didymium safety glasses are for you.

Shop Didymium Safety Glasses


Didymium safety glasses are found in most art glass shops and many other artists’ shops. If you are working with any type of soft glass, you probably have a use for these safety glasses.

If you have any questions about didymium safety glasses or what type of safety glasses you need for your work, give us a call or leave a comment below. There are those working in neon lighting who use didymium safety glasses, as well as a few other special needs that didymium safety glasses fill. We’ll let you know which safety glasses are best for you. Thanks for reading, and stay safe!

11 Responses to Didymium Safety Glasses
  1. Terri Green
    March 9, 2015 | 12:15 am

    I’ve dabbled in metalworking and am learning to solder metals (sterling silver, argentium silver, copper). I am also learning to enamel copper using a propane torch. I have also taken a beginner glass beadmaking class.
    Most of the information I find on safety glasses discuss glass beadmaking but not enameling or soldering. Which safety glasses would be appropriate for enameling and soldering? (I am currently using a propane torch.)
    Thank you!

  2. Gabe
    November 17, 2014 | 11:51 pm

    I ordered a pair of didyium glasses from an eBay seller and I don them while using a minor torch to work with Arrow Springs soft glass. Some of the colors like light and dark turquoise burn really bright. It is bright enough to the point I’m wondering if the glasses I’m using are protecting me properly or if a couple of these colors just burn brighter.
    thanks for any insight

  3. Cristina
    September 11, 2014 | 5:38 am

    Good morning,

    I’m from Romania, looking for a protection glasses for glass industry (with didymum). Are your models certified for European market (accoding to EN166)? How can I buy them (usually small quantities)
    Thank you for reply.


    June 17, 2014 | 8:04 am

    We are supplier & manufacturer of Prescription Safety eye wear in India.
    We want to know more about the Didymium Glasses so that we can also explain about the product to our customers & market it.

    Good Day.


    • Bill Brown
      June 18, 2014 | 2:18 pm

      The article above explains what Didymium lenses are. All that I would add is that they are available in prescription both as single vision and lined bifocal. The way they work is that there are rare earth elements infused in the glass that actually absorb the yellow/orange line of the spectrum between 583 and 592nm, effectively erasing those colors. That is why they are so good at eliminating the sodium flare experienced while glass working.They provide a small amount of protection from infrared radiation. Generally not enough if working with colored borosilicate glass.That is why the Green Ace Shades 3 or 5 is recommended. These are also available in prescription. If you have further questions, feel free to email me at the address above.

  5. willa
    June 7, 2014 | 2:29 am

    My partner is a blacksmith, and he wears prescription glasses. What kind of glasses does he need as far as dydimium vs green IR-filtering ones? And what are the options for combining these with prescription glasses? Thanks!

    • Kieran Hunt
      June 11, 2014 | 1:43 am

      Hi Willa,

      As a blacksmith, he will probably need standard welding protection such as Green IR, which protects against UV and IR. He probably already knows what shade he prefers. These are not available in prescription in high shades required for welding, but they’re typically worn in a helmet anyway.

      For any kind of furnace or glory hole observation, our Light Green is a good choice. If he also need to block sodium flare, then our Green Ace Shade 3 is a good choice. Both of these types of lenses are available in single vision and lined bifocal prescriptions.

      Please let us know if you have any other questions!

      Kieran Hunt
      Phillips Safety Products, Inc.

  6. Waldo Young.
    May 7, 2014 | 1:20 am

    I’m a ceramist and I built a gas kiln, I need to be looking inside the hot red/white (1000°C-1150°C)inside during a fire to see if/when the ceramic is done or the glaze is molten, I need to look several times for many seconds and the glow is blinding and I’m afraid I’m damaging my sight, what kind of protection do you recommend?

    Thanks for your time.

  7. scott krebeck
    April 11, 2014 | 10:44 am

    Are there didymium glass with built in manifiers ? I need magnifiers to see up close and flip up and over glass type glasses r a pain .. .thank you
    Scott krebeck

Leave a Reply

Trackback URL http://blog.phillips-safety.com/didymium-safety-glasses/trackback/