An Art Deco rock crystal and diamond dress set, by Krementz & Co. for Tiffany, circa 1920Double-sided: Each carved rock crystal disc highlighted by a central collet-set old brilliant-cut diamond, within an engraved border, accompanied by four buttons and three studs en suite, buttons and studs signed Krementz, cufflinks unsigned, lengths: cufflinks 1.3cm, buttons 1.1cm, studs 0.7cm, fitted case by Tiffany & Co.注脚Purchased by the vendor from Kentshire at Masterpiece in 2012.