Absolutely stunning piece!
Very Unique Vintage Neck Piece Collar Choker 
Gold Tone Metal and Round Amber Glass Cabochons in various sizes and three different colors - graduating from dark orange to pale yellow Amber shades
Definitely one of a kind Showstopper piece. 
Marked but I cannot make it out.
One stone is missing next to the clasp, not noticeable while wearing. Otherwise excellent condition.
Please check the pictures for details, measurements and condition.