19th Century Old Mine Cut Diamond Set Collar that Converts to Two Bracelets

This necklace positively flows around the neck and looks terrific. It is an unusual design with thirty articulated sections. Each section has been set with a mixture of old mine cut and rose diamonds. It also separates in to two bracelets, the wide section and then the narrower section. The front is silver and the reverse is gold. It was made towards the end of the 19th century.