Came across these recently, where originally part of an earring set some one made, so no history.
The beads are heavy, the core is a milky slightly opalescent white
beads are approx 19mm x 16mm

I do not know what to think of these so any thoughts on origin and age would be appreciated.

Thanks Wayne

PS the inner dark circle on the core is just dirt. no layering in core of the bead