WARTSKI.
http://en.wikipedia.org/wiki/Wartski
Founded in North Wales in 1865, Wartski is a family owned firm of antique dealers specialising in Russian Works of Art; particularly those by Carl Faberge, Fine Jewellery and Silver. The business is located at 14 Grafton Street in Mayfair, London. They hold royal appointments as Jewellers to H.M. the Queen and H.R.H. The Prince of Wales.