This 5mm wide TITANIUM ring has a 3.5mm BLUE SAPPHIRE Round stone. The stone is held firmly between Cathedral arms. The tension of the band on the stone prevents it from falling out. You also have the option of sending your own stone to have us set it in this style of ring. Each ring is individually designed for the exact dimensions of your stone size along with a COMFORT-FIT for extra satisfaction. Tension settings are the ultimate in contemporary engagement ring design: their smooth, sleek lines and natural elegance highlights the perfection and beauty of the stone rather than adding distracting embellishments. Our TITANIUM rings WILL not TARNISH or cause your skin to discolor.