Turquoise and diamond pendant/clasp, late 19th century

Property of the descendants of William & Robert Adam
Turquoise and diamond pendant/clasp
late 19th century

The centre set with a oval diamond weighing approximately 2.51 carats, within a bi-coloured open work mount set with turquoise cabochons and rose-cut and cushion-shaped diamonds, later detachable pendant fitting.

Condition Report:
Central diamond weighing approximately 12.6 x 9.2 x 3.4mm, calculated to weigh approximately 2.51 carats, estimated to be approximately K colour, I1 clarity, medium blue fluorescence. Turquoise with some areas of discolouration, visible matrix, surface-reaching inclusions and resultant pitting and chips. Estimated remaining total diamond weight approximately 4.50 - 5.50 carats, of mixed colour and clarity grades. Overall dimensions approximately 38 x 36mm, gross weight approximately 12.8 grams. Detachable brooch/clasp fittings deficient. Later detachable pendant fitting. Overall in good condition.

Provenance:
Juliet Adam, neé Palmer, (1857-1927) who was the wife of the diplomat Charles Fox Frederick Adam (1852-1913) and daughter of Commodore James Croxhall Palmer, (1811-1885), Surgeon General of the US Navy;
Thence by descent.