Blue Nile is an online retailer of diamonds and fine jewelry. The company was founded in 1999 and is headquartered in Seattle, Washington. Blue Nile offers a wide range of products, including engagement rings, wedding rings, and other fine jewelry. The company's products are sold through its website and are shipped directly to customers. Blue Nile is known for its high-quality products and exceptional customer service. The company has been recognized by numerous publications, including Forbes, Fortune, and The Wall Street Journal. Blue Nile was acquired by Bain Capital Private Equity and Bow Street LLC in 2017.