When I said "WenP's two necklaces shown so far appear to be Rousselet originals", just to clarify - in case someone thinks I am referring to the wound red glass beads - the two pieces which WenP has shown which I believe are Rousselet designs are:

(i) the marbled yellow glass and cylindrical casein on fox chain with spherical clasp

(ii) the dark blue glass and carved red casein with vegetable ivory beads, fox chain and spherical clasp.

Cheers
Carole