Vintage Etruscan Revival Style Clay Polymer(?) & Green Cabachon & Bead Necklace

I went in a long rabbit hole researching this piece & finally gave up trying to determine what the material or designer is so I’m guessing at handcrafted polymer clay for the geometric shaped pieces. This beautiful piece features linked geometric shapes each framed in brass with artistic design details, nephrite jade colored glass(?) or ceramic cabochon & beads. The brass linked chain has metal ring spaces between the glass beads as well as gold tone swirled discs. The back of the pieces are smooth almost like plastic. Looks like the necklace length has been extended with gold plated chain and a barrel clasp. I’m guessing age based on the “crazing” in the material, although it could have been created with vintage materials. Regardless, this piece is beautifully constructed and a visually appealing design. Hallmarks: None Measurements: Chain 17” length with a 3” length drop x 1-2” wide pendants Condition: Beautiful vintage condition with noted chain extension and light crazing.