The listing, Stunning Antique or Vintage German Glass Cameo Ring has ended.
This incredibly detailed cameo, suspended in deep mint-colored glass, has been in our family for some years.
I do not know how old it is, or anything about its manufacture. The ring is adjustable, to fit all.
.It is stamped "GERMANY" on the inside, and there appears (to my eye) to possibly be a manufacturer's mark in front of the "GERMANY" stamp -- something like "TAF?" but I definitely can't tell for sure. It doesn't appear to have a metal stamp, and I think it is made of brass
However.... I DID find some other vintage/antique rings and cameos rather similar to it, online.
Here are the URL's for those cameos:
http://www.etsy.com/listing/73060693/vintage-amber-glass-cameo-ring-west
http://www.etsy.com/listing/44965095/vintage-black-glass-intaglio-cameo-ring
http://www.rubylane.com/item/240349-CJBG1201-1210/German-Green-Glass-Cameo-Brooch
Blessings! Happy bidding!
Note: I only ship to Listia-certified addresses.