The face of ring is 9mm X 16mm. Domestic within 3-7 days. International within 12-20 days (sometimes longer depending on the country). You may return the items within 14 days if you are not satisfied. Track Page Views With. Auctiva’s FREE Counter. The item “Genuine Rainbow Moonstone, Tanzanite 925 Solid Sterling Silver Engagement Ring 8″ is in sale since Tuesday, April 2, 2019. This item is in the category “Jewelry & Watches\Fine Jewelry\Fine Rings\Gemstone”. The seller is “silverart2013″ and is located in Katy, Texas. This item can be shipped worldwide.