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Lot 2137
An Opal and Diamond Brooch, an oval opal in a rubbed over setting, to a pierced scroll bar set with a round brilliant cut diamond, measures 4.5cm see illustration The brooch is in good condition. It is not hallmarked or stamped but in our opinion would test as gold. It fastens with a pin and safety catch. The opal measures 10.00mm x 8.00mm x 2.56mm approximately. Estimated diamond weight 0.03 carat approximately . Gross weight 4.8 grams. Purchased by our vendor in Australia. Condition Report made 5th April 2017.
Lot 2120
A Black Opal and Diamond Cluster Ring, an oval cabochon black opal within a border of old cut diamonds in milgrain settings, total estimated diamond weight 0.20 carat approximately, finger size O1/2 see illustration The opal has a chip to one long side. It is not hallmarked or stamped but in our opinion would test as platinum. The opal measures 12.40mm x 8.00mm x 4.10mm approximately. The cluster head meausres 1.7cm by 1.3cm approximately. The approximate qualities of the diamonds are; colour H/I, clarity SI1/SI2. Gross weight 4.4 grams. Condition Report made 30th May 2017.
Lot 2042
An Arts & Crafts Opal Ring, an oval opal in a claw setting within a border of small flower heads, to forked shoulders, finger size K see illustration The ring is in good condition. It is stamped '18CT' and in our opinion would test as gold. The opal measures 13.10mm x 6.50mm x 4.18mm approximately. The head measures 18.70mm x 11.70mm. Gross weight 4.6 grams. Condition Report made 9th June 2017.
Lot 2052
An 18 Carat Gold Black Opal Ring, an abstract oval black opal to scroll twist shoulders, finger size L1/2 see illustration The ring is in good condition. It is hallmarked with sponsor's mark 'T.A.P', Sheffield, 1985. The opal measures 14.50mm x 7.20mm approximately. Gross weight 5.4 grams. Condition Report made 19th May 2017.
Lot 543
A group of ten specimens of dark orange opal in a matrix, each in a white card tray with label reading: 'Opal in matrix, Bocoyna, Chihuahua, Mexico'. 252 grams total, 34-46mm (1 1/4 - 1 3/4"). From a historic ‘Victorian Museum’ collection; from the stock of Gregory, Bottley & Lloyd (1981-2014); formerly with Gregory, Bottley & Co. (1932-1981) and previously with J. R. Gregory & Co. (1898-1932); originally in the collection of the famous James Reynolds Gregory (1858-1898"). This item is part of a historic collection of fossils and minerals which has recently been reviewed by leading geological expert Dr. Ronald Bonewitz. [10, No Reserve] Very fine condition.
Lot 75
A 9 carat white gold kyanite and diamond cluster ring, finger size N1/2, a 9 carat gold chrome diopside and diamond cluster ring, a 9 carat gold bi-coloured tanzanite and diamond ring, a silver opal ring, a silver black diamond solitaire ring, and a silver chrome diopside and zircon ring (6) 9 carat gold 10g gross
Lot 628
A Marcus & Co opal diamond and green gem brooch possibly diopside, the central opal has good green, red and blue colour play, diamond content estimated approx 0.90cts, dimensions 2.2cm x 2cm, weight approx 5.9gms, signed Marcus & Co to the reverse, made in yellow and white metal Marcus & Co, was an American luxury jewellery retailer in New York from 1892 - 1962
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66634 item(s)/page