Vintage Art Deco sapphire blue open-backed paste rhinestone and gold tone filigree Czech crystal brooch pin, stunning cornflower blue galalith Ltd: I believe this mark

Ltd: I believe this mark refers to the UK silver and jewellery manufacturers

with no rubbing to the silver tone on the reverse

there are none there now but small circles of thin perspex could be used

I must confess I am struggling to date this piece

Vintage Art Deco sapphire blue open-backed paste rhinestone and gold tone filigree Czech crystal brooch pin, stunning cornflower blue galalith Ltd: I believe this markVintage Czech rhinestone Art Deco brooch with remarkable bright cornflower blue large rhinestones claw prong set in antique gold tone. The central rhinestone is surrounded by beautiful gold tone filigree work. This piece has characteristic Czech construction and fixings for the period, fastening with a pin and old style C clasp. The beautiful blue crystal rhinestones around the border have been claw set in open backed settings so that the light