This piece is beyond fabulous - vintage sterling silver "Som's Sterling" amethyst and rutilated quartz heavy (43.6 grams) door knocker brooch. The piece is marked and tested. It measures 3.5" x 2.25". It has a stunning 12x10mm rectangular amethyst set in the middle. There are two rounded edge rutilated quartz accent pieces, on at the top and the other in the middle. Dangling from the brooch is a pear shaped amethyst stone which measures 15x10mm. Designed by Zack Som. Circa 1970s. Excellent condition.