Old cufflink question

Hi all, I was wondering if anyone can help identify a stone that was
used in a 1940’s?? cufflink. A client brought over this old cufflink

  • it looked like brass with a milky white sort of opalescent stone
    in it. The client was sure this was an opal of the finest quality,
    and wanted the stone reset into a ring. But when I took the "stone"
    out there was a piece of copper foil underneath and under a loupe
    there were bubbles in it. Could this be some sort of period glass,
    like milk glass? I researched all over the internet but could not
    find anything similar. Any help will be much appreciated!

Mary Barker, IT Project Manager Addison Avenue Federal Credit Union
@mary_barker1 650-855-3392 M-Th 6:30 am - 2 pm Pacific time

Hi Mary, If you send a picture to Wolf Myrow Co. in
Proviaence R.I. They could probably confirm. It sounds a lot like
West German or Czech glass. These folks have delt with antique
glass and brass stampings for three generations. Hope this helps.
Helen

Dear Mary,

This could well be just a glass. It however could also be an opal
doublet or triplet.

A doublet consists of a layer of opal with a glass (or other
material) layer glued under that.

A triplet has a layer of opal between 2 layers of glass (or another
material).

A good way to show this is to place the stone (with tweezers) in a
glass of water and viewing it from the side, that should reveal the
different layers to you.

It goes without saying that a doublet or opal triplet has little
value.

Alain van Acker FGA