System of marking precious metals, not required on antique jewellery, but sometimes marks can be found.


The jewellery house of Harry Winston was founded in New York City in 1932. Known throughout his life as “King of Diamonds” and the “Jeweller to the Stars”, Mr Winston was among the most noted jewellers in the world, well-known to the general public. His jewellery designs had an emphasis on individual gemstones and important diamonds. Harry Winston possessed some of the world’s most famous gemstones, including the Jonker, Hope and Winston Legacy Diamonds. Today, the jewellery house of Harry Winston continues its tradition of creativity, rarity, and quality in its stores around the world, including New York, London, Paris, Geneva, Tokyo and Hong Kong.