The necklace in this fabulous Victorian Italian silver and shell cameo demi parure is featured on the inside cover and again on page 148 of Fred Rezazadeh's book, Collectible Silver Jewelry.

Absolutely wonderful necklace and bracelet set, made of Italian filigree silver, shell cameos and unfoiled aquamarine colored stones.  The necklace is 21-1/2" long with a focal area that extends 5-1/2" across and drops 1-1/2" at the center.   A disk near the clasp is marked 925 Italy and a mark that looks like CA, with a symbol between the letters.   Oddly, the matching 6-1/2" bracelet is marked GM on the clasp.   The bracelet is about 1-1/8" wide at the center. 

Considering the age of this fabulous late Victorian set, overall condition is excellent.