This necklace features an octagonal-cut (often referred to as "oct" for short) blue sapphire with a weight of 1.80 carats, set in 14k white gold (WG). Blue sapphires are highly valued for their deep and rich blue color, and the octagonal cut offers a unique and stylish geometric shape for the gemstone. Necklaces with blue sapphires are known for their timeless beauty and versatility, making them suitable for various occasions and outfits.