Adam's Fine Jewellery & Watches September 18th 2018

28 Tuesday 18 th September 2018 42 AN EARLY 20TH CENTURY DIAMOND BROOCH Of openwork geometric form, the central old cushion-shaped diamond within a surround of old cush- ion, single, rose and brilliant-cut diamonds, mounted in gold and possibly platinum, diamonds approximately 2.20cts total, width 5.8cm € 800 - 1,000 43 A NATURAL PEARL AND DIAMOND CLUSTER RING, CIRCA 1910 The round-shaped natural pearl of cream tint, measuring approximately 7.41x7.33mm, within a double surround of old single-cut diamonds and similarly-cut diamond shoulders, mounted in 18K gold and platinum, French import marks, ring size O € 1,000 - 1,500 Please note that the pearl was verbally tested at GCS laboratory in London on August 9th 2018, and was confirmed to be natural, saltwater pearl. 44 AN EARLY 20TH CENTURY DIAMOND BAR BROOCH Composed of a single-row of graduating old brilliant and cushion-shaped diamonds, within mille- grain setting, mounted in 18K gold and possibly platinum, diamonds approximately 1.20cts total, French assay marks, length 7.2cm € 600 - 800