An 18 Karat Yellow Gold, Platinum, Diamond and Ruby Violin Brooch, Oscar Heyman & Brothers, Circa 1973, containing 59 round brilliant cut diamonds weighing approximately 1.00 carat total and four round cabochon cut rubies set in the tuners. Stamp: 73195 (maker's mark for Oscar Heyman & Brothers) 18K PLAT. For a similar item with serial number #73196, please see the Museum of Fine Arts, Boston, accession number: 2015.2218. 10.50 dwts. Estimate 1,200-1,800