9K Gold Diamond & Emerald Cross - Genuine 9K Gold, Real Diamonds, and Made in Ireland by Solvar. Dublin Castle Hallmarked 9K Gold, presented in a neat Gift Box. Chain length 18", height .83". The timeless Celtic Cross - a symbol of the Emerald Isle known around the world. Even today, more than 200 original, historical carvings of this iconic Irish Cross remain in Ireland!