Wikipedia is king here: Strontium aluminate is a solid odorless, nonflammable, pale yellow, monoclinic crystalline powder, heavier than water. When activated with a suitable dopant (e.g. europium), it acts as a photoluminescent phosphor with long persistence of phosphorescence.

It´s very similar to Seiko´s Lumibrite or Rolex´s Chromalight. Totally safe technology.



The same order applies for the brightest and the long lasting glow color:
  1.   Green
  2.    Aqua
  3.     Blue
  4.  Purple

All colors will glow with rage the first minutes then they will fade and will remain a dimed glow all night long in a dark room. For example you will see it glowin softly in cinema.


Please refer to our size troubleshooting page.




If you need to exchange your ring for a different size, please send us a note at support@clubboria.com and let us know your order number and what size you need. Just put the one that doesn't fit in the mail with a note including your name, order number, and a quick sentence noting that this is an exchange, and mail it to:

Club Boria
Pintor Lucio Munoz 11 3A
Madrid 28050

Please email us at support@clubboria.com with the tracking number for the package you sent back, as well as what size you would like to exchange your ring for.


    Your ring will be sent a week after the order it´s made. All the rings are handmade here in Madrid and it´s an elaborate process.



    At the moment we do not offer engraving services.


    Any question? Please, refer to our contact page.

    White Glow Ring