Maria Tash 3mm-4mm Prong Set Cubic Zirconia Rook BarbellLow profile set 3mm and 4mm cubic zirconia stones form a classic curved barbell for the rook. Since bottom stone is partially hidden by the rook flap the 4mm stone still provides sparkle and acts as a gravity assist to keep the piece down and in place. Bottom stone has a Victorian filagree prong setting and top has a plainer setting so it is a low profile as possible. All colors of gold are nickel free and hypoallergenic. Item sold singly.