A VERY FINE RUBY AND DIAMOND RING, BY BULGARIThe cushion-shaped ruby weighing 2.92cts within a four-claw setting, between two pear-shaped diamonds, to a brilliant-cut diamond surround, mounted in 18K gold, diamonds approximately 3.00cts total, signed Bvlgari & 'CM 2.92', with maker's mark 'BB' for Bvlgari, ring size N½Accompanied by a report from Gübelin laboratory in Switzerland, 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 by a gemstone rating card from Gübelin, rating the ruby 'excellent' with 88.2 points.Gubelin rating aspects: https://www.gubelingemlab.com/en/gemlab/gemstone-ratingAccompanied with information sheets from Gübelin for unheated stones & rubies from Mogok, 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 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 continues 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.

Diamonds: approx. 3.00cts total, bright and lively Ruby: red hue, medium tone, good saturation, good transparency, facets are smooth. Natural inclusions visible under a bright light source and 10x magnification. Accompanied by a report from Gübelin laboratory in Switzerland, 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 by a gemstone rating card from Gübelin, rating the ruby 'excellent' with 88.2 points. Gubelin rating aspects: https://www.gubelingemlab.com/en/gemlab/gemstone-rating Accompanied with information sheets from Gübelin for unheated stones & rubies from Mogok, Burma. Maker's mark BB for Bulgari imported and sold in Switzerland Minor signs of wear, overall in good condition Total gross weight approx. 10g