1) Blue Nile was founded in 1999 by Mark Vadon to sell diamonds and jewelry online at lower prices than traditional retail stores by cutting out middlemen.
2) While revenue has increased in recent years, costs have also risen significantly due to Blue Nile's expansion into non-engagement jewelry and global commodity price increases, reducing profits.
3) Blue Nile faces intense competition from larger retailers like Tiffany's and Amazon, and high commodity prices have squeezed margins by limiting their ability to pass on higher costs.