We will do our best to answer questions. All of our Product is guaranteed to be 100% authentic. International Estate Buyers is owned and operated by the Guildmark Group. The Guildmark Group is a member of the Better Business Bureau, IWJG and NAWCC. The item "Authentic Tiffany & Co.18K Yellow Gold Diamond & Ruby Heart Pendant/Necklace" is in sale since Thursday, May 05, 2016. This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Necklaces & Pendants\Diamond". The seller is "internationalestatebuyers" and is located in Dayton, Ohio. This item can be shipped worldwide.