An important platinum, diamond and 18.99ct Columbian emerald cocktail ring from the 1960s by the House of Oscar Heyman. Highly regarded as “The Jewellers’ Jeweller”, the creations of this New York based family business are incredibly sought after. Founded in 1912, the company is still in operation today, but experienced its golden years during the last century. Superior design, quality and craftsmanship can be seen in this beautiful piece, which is perfect for lovers of all things green. Wide shoulders have been set with an eye catching arrangement of thirty sparkling brilliant and baguette cut diamonds that remind us of the geometric forms and strong lines made famous by the earlier Art Deco period. A clear architectural inspiration can be seen in this statement composition, which is furthered by a delicate reeded shank. Bringing to mind the architecture of New York City in the 1930s this arrangement of baguette and brilliant cut stones featured regularly in the designs created by the House during this period. Nestled beneath the verdant rainforests that cover the country, the Columbian mines are famous for producing stones that have an intense pure green colour. The rare 18.99ct example that has been set as the centrepiece of this ring is accompanied by certification from the renowned (AGL) American Gemmological Laboratories to confirm its Colombian origin, and that it has only been subjected to moderate treatment to enhance its colour and clarity. A collectible jewel from one of the most famous makers of the 20th- century a unique serial number has been engraved into the inside section of the shank.