Adam's Fine Jewellery & Watches 14th May 2024

T uesday 14 th M ay 2024 . S tarting at 4 pm 72 96 A VERY FINE RUBY AND DIAMOND RING, BY BULGARI The cushion-shaped ruby weighing 2.92cts within a four- claw setting, between two pear-shaped diamonds, to a bril- liant-cut diamond surround, mounted in 18K gold, diamonds approximately 3.00cts total,signed Bvlgari &‘CM 2.92’,with mak- er’s mark‘BB’ for Bvlgari, ring size N½ € 40,000 - 60,000 Accompanied by a report from Gübelin laboratory in Swit- zerland, stating that the ruby weighing 2.92cts, is natural, of red colour, Burmese origin, with no indications of heating (NTE). Report no. 24010061, dated January 30th 2024. Accompanied with information sheets from Gübelin about unheated stones & rubies fromMogok, Burma. Mining for rubies , particularly in regions like the Mogok Valley in Burma (Myanmar), has a rich history dating back over a millennium.The Mogok area, renowned for its ex- ceptional 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 forma- tion to a complex interplay of geological factors. The geological conditions necessary for the creation of gem-quality rubies are rare and precise. Specific combina- tions 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 signifi- cant enhancements, with imperfections considered accept- able. 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,mim- icking the characteristics of untreated specimens. Despite advancements in treatments, the demand for natu- ral, unheated rubies continues to outstrip the limited supply. These rubies, sourced from various regions including Bur- ma (Myanmar), Mozambique, Madagascar, and others, re- main highly sought after for their rarity and intrinsic beauty.