It measures 9.5 in diameter. Please see photos for details. The item "Unusual Large Ovoid Shaped Silver Mercury Glass Christmas Tree Ornament" is in sale since Monday, June 17, 2019.This item is in the category "Collectibles\Holiday & Seasonal\Christmas\ Modern (1946-90)\Ornaments\Glass, Crystal". The seller is "planetantiques55" and is located in Columbia, Pennsylvania. This item can be shipped worldwide.