Natural Emerald oval cut Green and Diamond Halo Style 18K White Gold Ring. Center Stone Specifications: Natural Zambian Emerald. 11 mm x 8.5 mm. The item "Natural Emerald Zambian & Diamond Engagement oval cut 18k White Gold Halo Ring" is in sale since Saturday, March 24, 2018. This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Rings\Gemstone".The seller is "2umbrellas" and is located in New York, New York. This item can be shipped worldwide.