An opal and diamond crescent brooch, circa 1890Set with a graduation of oval opal cabochons, accented by old brilliant, single and rose-cut diamonds, mounted in gold, accompanied by an en tremblant hair slide, length 6.1cm, fitted case by P. Orr & Sons of Madras注脚The first showroom of P. Orr & Sons was opened at Anna Salai in 1879 which is today a heritage building and still in operation. The building was commissioned by Scottish watchmaker Peter Orr, and designed by Robert Chisholm, consulting architect to the Government of Madras. It was inaugurated by the Duke and Duchess of York, who later became George V and Queen Mary. The store initially sold diamonds, equipment, guns, silver, and later mechanical watches and clocks. P. Orr were the first to sell a Rolex watch in India.