Demantoid brooch with Burma peridot. Silver, green patinated; iron oxidized; 18 ct white gold (mounting). Unique. Solid forged whorl rosette from green patinated silver, the lamella edges continuously set with strips of small Russian demantoides (522 stones total 6.31 ct), center a very fine oval faceted dark-olive green Burma peridot (137.86 ct, approx. 32.6 x 27.6 x 21.4 mm, deep color saturation) in blackened claw setting from iron. Material data according to inspected invoice v...