Natural Blue Opal Solitaire Ring. Featuring a brilliant 8x4 mm marquise-cut 1.0 carat blue opal, this gemstone ring is delicately handset in 925 sterling silver and finished with a rich yellow gold-filled layer, offering the perfect balance of luxury and durability. Designed with a sleek and feminine silhouette, this Solitaire Blue opal ring is ideal for layering or wearing solo. Whether paired with wedding bands or worn as a minimalist engagement ring, it brings charm and sophistication to any look. Crafted for comfort and everyday wear, this ring is made with hypoallergenic, tarnish-resistant materials, making it perfect for those with sensitive skin.