This stunning platinum ring features a large cushion-cut blue sapphire with a total weight of 5.05 carats, elegantly surrounded by a halo of round brilliant diamonds totaling approximately 0.97 carats. The cushion-cut shape is known for its soft, rounded corners and deep facets that produce a rich, glowing color in blue sapphires, making this stone a dramatic and eye-catching centerpiece.

The ring is crafted in 950 platinum, a premium precious metal prized for its durability, hypoallergenic properties, and naturally white luster that enhances the cool tones of the blue sapphire and the brilliance of the surrounding diamonds. Platinum is significantly denser than white gold and does not fade or require replating over time, making it an ideal metal for a high-value gemstone ring meant to be worn for generations.

Blue sapphires are September's birthstone and have long been associated with loyalty, sincerity, and nobility. The cushion cut's larger facets allow the deep blue hue of the sapphire to display beautifully in various lighting conditions. As with most colored gemstones offered at Costco, the sapphire may have undergone standard industry heat treatment to enhance its color and clarity.