Marcus Co. natural pearl and diamond necklace, circa 1915.

Natural pearl and diamond necklace. Set to bottom with a drop shape natural freshwater pearl in a closed back half-drilled setting, approximately 5.5-5.5mm x 7.6mm, further set with ...

Marcus and Co. diamond brooch. Set to centre with one round old cut diamond in an open back grain setting with an approximate weight of 0.40 carats, further adorned by sixty round mi...

Natural pearl, emerald and diamond ring. Set centrally with a round natural saltwater pearl in a closed back half drilled setting, approximately 5.5 x 5.6 x 4.5mm in size, further decorated with eight calibré cut natural emeralds in open in open back rubover settings with a combined approximate weight of 0.20 carats, further set with sixteen round eight cut diamonds in open back grain settings with a combined approximate weight of 0.16 carats, flanked further with two round old cut diamonds in open back rubover settings with a combined weight of 0.06 carats. The total approximate diamond weight is 0.22 carats, to an impressive cluster design featuring intricate openwork with millegrain edging, a decoratively pierced gallery and fancy shape open backholing, leading to asymmetric openwork shoulders with a foliate motif, and flowing through to a solid D-shape shank. Tested platinum, circa 1915, accompanied by Gem and Pearl...

Belle Epoque pearl and diamond necklace, circa 1905. An open work 3 row flat chain of platinum links and seed pearls. In the centre, an ...