Natural stone good necklace of calcedoine "art nouveau"

Very beautiful necklace in calcedoine of 8 flat and round beads (1.5cm) with facets spaced by a small brass top pearl and a long drop (4cm) of a beautiful water green.
Print and brass assembly.
About 25 cm in length
About 42cm in circumference

Comes in a pretty pink silk bag embroidered as a photo good