The 18kt White Gold Caroll Tourmaline Ring by Davidson Jewels. This handcrafted ring features a 1. 30 carat cushion cut green tourmaline stone, set in 18kt white gold ring. Designed with a unique basket weave construction which tapers to the back of the finger for a comfortable fit. Size 6 US / EU 52 About the Designer: Based in Calgary, Canada, Ian Davidson has been successfully designing custom made wedding bands and engagement rings for the past five decades. Davidson Jewels specialises in unique and heartfelt designs, that capture the importance of the occasion. To find out more about the designer, please visit Davidson Jewels.