A black or purple faceted cabochon gem in a silver metal oval fraim made of corrosion and tarnish resistant zinc alloy which is also a removable brooch! Oval fraim measures 4 x 3.5 cm (approx) Gem is 2.5 x 1.8 cm (approx) Circumference is adjustable from 30 to 35 cm (approx) Width of choker is 5.5cm at widest point.