ADAM'S Fine Jewellery & Ladies Watches 12th May 2026

TUESDAY 12 TH MAY 2026 . STARTING AT 4PM 62 47 A FINE RUBY AND DIAMOND DRESS RING The elongated cushion-shaped ruby, within a four-claw setting and between half- moon and bullet-shaped diamond shoulders, mounted in platinum, diamonds ap- proximately 1.00ct total, ring size K½ € 12,000 - 18,000 Accompanied by a report from GCS laboratory in London, stating that the natural ruby weighing 4.10cts, is of Burmese origin (Mogok), with no indications of heating. Report no. 5786-2433, dated April 17th 2026. Mining for rubies, particularly in regions like the Mogok Valley in Burma (Myan- mar), has a rich history dating back over a millennium. The Mogok area, renowned for its exceptional rubies, has sustained its reputation for producing some of the most desirable gems globally. These rubies, characterized by their red body colour, UV fluorescence, rutile silk, and distinct growth patterns, owe their formation to a complex interplay of geological factors. The geological conditions necessary for the creation of gem-quality rubies are rare and precise. Specific combinations of elements like aluminium and chromium, along with the right temperature and pressure conditions, are essential for their formation deep within the earth. These conditions are found in only a handful of locations worldwide, making the supply of high-quality natural rubies limited. Traditionally, rubies were cut and polished without significant enhancements, with imperfections considered acceptable. However, as demand for high-quality rubies increased, so did the need for treatments to improve their appearance. Modern heating techniques and chemical additives have been employed to enhance the visual appeal of rubies, mimicking the characteristics of untreated specimens. Despite advancements in treatments, the demand for natural, unheated rubies con- tinues to outstrip the limited supply. These rubies, sourced from various regions including Burma (Myanmar), Mozambique, Madagascar, and others, remain highly sought after for their rarity and intrinsic beauty. 48 A JADEITE JADE AND DIAMOND DRESS RING The oval-shaped jadeite jade cabochon within a double four-claw setting and be- tween marquise-shaped diamond shoulders, mounted in 14K gold, ring size M½ €3,000 - 5,000 Accompanied by a report from GCS laboratory in London, stating that the jade weighing 11.70cts, is a natural j adeite jade , with no indications of impregnation. Report no. 5786-2435, dated April 17th 2026.