It is signed by Tiffany & Co. and comes from their Elsa Peretti collection, which is known for its elegant and timeless designs. The ring is a size 4.5 and features one natural round pink sapphire, with no other stones. It is stackable and made of sterling silver, with a band width that is unknown. The main stone color is pink, and the metal is silver. The ring would make a wonderful addition to any jewelry collection and is sure to be cherished for years to come.