Platinum Art Deco ring with diamonds and Sri Lanka sapphire

A platinum ring made most likely in the first half of the 20th century, which by its design and form fits into the Art Deco style. It has no hallmarks that unequivocally confirm its origin. The central stone is a highly valuable, untreated and unheated, transparent sapphire with a naturally intense blue color. A flawless sapphire in a cabochon cut from Sri Lanka, the world's richest region in the most valuable and beautiful gemstones. Diamonds in baguette and brilliant cuts with high parameters were embedded on the setting and the ring band. An absolutely unique proposition, comparable to luxury goods auctioned in the world's largest auction houses.