Fab is an American shopping website that started out as a flash sale model and is dedicated to the design and sales of home furnishings, jewelry, and artwork. The products it sells are mainly characterized by novel designs and unique shapes. Representative products include retro yellow printers, tables made in the shapes of American states, and coin jars designed with artificial grass.

Blue Nile is the world's largest online retailer of certified diamonds and fine jewelry. Founded in 1999, Blue Nile is headquartered in Seattle. As the world's largest online seller of diamond jewelry, Blue Nile has its own unique concept - purchasing an engagement ring does not need to be complicated, knowledge about diamonds can be simple and easy to understand, and making the right choice is not difficult. At the same time, Blue Nile has also won the interest of famous media including Forbes, New York Times, Fortune Magazine and other with its unique charm. In addition, Blue Nile received the Platinum Award for Field Excellence from Bizrate, the only jeweler ever to receive this award.