SIZE 7  The ring is made of sterling silver. The top measures just over 3/4" (20mm) on the finger north to south. The 3 carats of baguettes are all securely set. All are man-made. The blue sapphire measures 10mm x 7mm with a weight of at least 2 carats. It is a man-made sapphire. Ring weight 7.5 grams. It is pre-owned and in excellent condition.