Adam's Fine Jewellery & Watches Tuesday May 14th 2019

89 149 A DIAMOND SINGLE-STONE RING The square step-cut diamond weighing 0.90ct, within a sur- round of pavé-set round brilliant-cut diamonds, to a similarly-set diamond trifurcated hoop, mounted in 18K gold, remaining diamonds approximately 0.40ct total, ring size M½ € 2,000 - 3,000 150 A SAPPHIRE AND DIAMOND CLUSTER RING The oval-shaped sapphire weighing 4.01cts within a four-claw setting and round brilliant-cut diamond frame, mounted in 18K gold, diamonds approximately 0.80ct total, UK assay marks, ring size L½ € 6,000 - 8,000 Accompanied by a report fromThe Gem & Pearl Laboratory in London, stating that the sapphire weighing 4.01cts is of Sri Lankan origin, with no evidence of heat treatment. Report no. 17006, dated March 26th 2019.