MARCUS & CO. BLACK OPAL, DIAMOND PLATINUM RING; Oval Australian black opal cabochon, 22.9 x 14 x 4.77 mm., 8.87 cts. by formula, red-orange/blue-green spectral play-of-color, in Art Deco platinum setting, diamond shoulders. Marked Marcus. Size 5 1/2. 5.0 dwt. In Marcus box. Probable gem source: Lightning Ridge. Companion to lots 2534 and 2535.
Auctioneer:
Rago Auctions
Date:
2014-12-07
WALTON & CO. BLACK OPAL AND DIAMOND RING, ca. 1900; Oval black opal, 11.5 x. 7.5 mm, two OMC diamonds and two green garnet accents Read more…
Auctioneer:
Rago Auctions
Date:
2012-12-09
An oval black opal cabochon, 22.2 x 11.3 x 5.9mm set in shaded translucent green and blue enameled surmount suspends similar pear-shaped black opal cabochon Read more…
Auctioneer:
Rago Auctions
Date:
2016-11-05
Comprising an oval black opal cabochon, 8.6 cts. by formula, with even Cerulean-green color play encircled by gold leaves. Ca. 1930. Marked Walton & Co., Read more…
Auctioneer:
Rago Auctions
Date:
2016-12-04
Art Nouveau peacock with black opal body, demantoid garnet feathers, ca. 1910. Partial marks (due to sizing) 14k and Walton. Size 7. 5.2 dwt. Note: Read more…
Auctioneer:
Rago Auctions
Date:
2015-12-06
Art Deco Platinum Black Opal, Sapphire, and Diamond Bar Pin, Marcus & Co., channel and bead-set with rectangular step-cut sapphires and full-cut diamonds flanked by Read more…
Auctioneer:
Skinner
Date:
2004-03-16
Art Deco Platinum and Black Opal Ring, Marcus & Co., set with anopal cabochon measuiring approx. 14.01 x 9.95 x 4.22 mm, pierced floral and Read more…
Auctioneer:
Skinner
Date:
2007-12-11
Moorish-style Gold, Opal, Demantoid Garnet, and Diamond Pendant, Marcus & Co., the shaped pendant bezel-set with a high-domed opal, circular-cut demantoid garnets, and old mine-cut Read more…
Auctioneer:
Skinner
Date:
2013-06-11
Antique Black Opal Stickpin, bezel-set with a pear-shape black opal, 14kt gold mount, signed M & Co. for Marcus and Co. Read more…
Auctioneer:
Skinner
Date:
2002-12-10
Egyptian Revival 14kt Gold, Opal, and Enamel Brooch, Marcus & Co., the large opal measuring approx. 43.00 x 33.00 mm, framed by ancient Egyptian motifs Read more…
Auctioneer:
Skinner
Date:
2014-06-12
Art Nouveau Opal, Diamond, and Enamel Brooch, Marcus & Co., centering an opal matrix cabochon within a scrollwork frame, and suspending a conforming drop, set Read more…
Auctioneer:
Skinner
Date:
2013-06-11
