The savings run deep at Costco -- perhaps deeper than you've ever thought. Check out some of the wildest items you can buy ...

We know Costco is a popular place to shop, but who's showing up 45 minutes before the doors open? And why in the world do ...

A diamond-studded necklace thought to be linked to a scandal that hastened the downfall of the doomed 18th century queen of ...

Costco has a specific return policy when it comes to diamonds. If you're not satisfied with your diamond purchase, you can ...

Costco's jewelry department offers a wide selection of fine jewelry, with some top-end selections that consumers typically ...

A diamond necklace which was linked to a scandal which ruined Marie Antoinette's reputation is set to fetch £2.1million at an auction. The antique necklace, which was also worn at the coronations ...

September marked the 12th consecutive month of growth in watch and jewelry sales, following a year of declines from September ...

Sotheby's will auction an exquisite 18th-century diamond necklace in Geneva on November 11, with online bidding starting October 25. The necklace, featuring around 500 diamonds and linked to Marie ...

Costco maintains a proven formula for successfully translating its operations across borders and faces minimal direct competition abroad, implying a long runway of growth prospects. As Costco ...

While Costco may be famous for it's whole sale-sized products and super deals on food court pizza, it can also be a fantastic place to find healthy options at a great price. Registered dietitian ...