Art Deco Sapphire and Diamond Bar Pin. This impressively sparkling, 3 and 1/8 inch long, platinum, sapphire and diamond bar pin, dating from the heart of the Jazz Age - circa 1925 - artfully presents a velvety blue cushion-cut sapphire, weighing 1.25 carats, radiating in all directions, but predominately east and west, with a glittering array of bright-white, round and square-cut diamonds.
An early 20th century diamond and pearl brooch The shaped oval openwork panel with central bouton pearl, old-cut diamond foliate panel shoulders and rose and old-cut diamond triple row border, circa 1910
A rare and regal original Belle Époque diamond choker - or 'dog collar' - necklace - circa 1900. With three platinum intersecting oval wreaths fashioned in flower and leaf motifs; the center of the wreaths sparkle with seven European-cut diamonds, plus one at the very bottom, for a total weight of 4.25 carats for the eight larger diamonds (9.00 carats total).
DIAMOND AND SEED PEARL CHOKER-NECKLACE, CIRCA 1900. Designed as three segments of multiple seed pearl strands joined by three openwork plaques of modified bow design, set with numerous old European-cut, single-cut and rose-cut diamonds weighing a total of approximately 1.75 carats, mounted in platinum and gold, length approximately 13¾ inches.