A glass intaglio necklace, early 19th century, composed of variously-shaped glass intaglios
A glass intaglio necklace, early 19th century, composed of variously-shaped glass intaglios imitating banded onyx, each within a gold collet setting and connected by two fine strands of gold chain, length 33cm, later bolt ring clasp
 
                         
                    

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