Vintage Art Deco green jade gemstone round bead and chunky unmarked solid silver link long flapper necklace

Fantastic vintage, Art Deco wired beaded long flapper necklace with green jade gemstone separated by chunky machine age link chain sections made of unmarked solid silver - either 925 sterling or perhaps a slightly lower grade.

The green beads look like they are some sort of gemstone and, despite not being a gemologist or gemstone expert, for me they have more characteristics of jadeite or nephrite than aventurine. I have seen antique Burmese jade beads that look exactly the same. 

The beads have been strung on individual silver wired sections and the chain links in between each bead have been tested and are solid silver twist loops. 

The necklace has a long flapper length of about 52 inches slips over the head so does not have a clasp. It is long enough to be worn singly or doubled up, or knotted in 1920s style as shown in the pictures. This necklace is in very good vintage condition and weighs a hefty total of 185 grams.