The White Gold Diamond Geo Pendant Necklace - 0. 09cts by London Road Jewellery. Part of the popular Portobello Collection, this lovely double bar necklace has 30 dazzling diamonds and is attached to an adjustable white gold chain. Hallmarked 9kt white gold. About The Designer: Led by brother and sister duo, London Road Jewellery creates highly wearable, gem-set fashion jewellery, named after renowned areas in London. London Road Jewellery makes their colourful jewellery using cutting edge techniques and traditional hand settings. To find out more about the designer, please visit London Road Jewellery.