How will I know that an item is available to purchase online and pick up at a Tiffany & Co. store?

After adding your item to your shopping bag, locations with available inventory will be listed on the 'Check for in-store pickup availability' drop-down, found at the top of your shopping bag page. 

Tiffany & Co. is currently offering in-store pickup service at all Tiffany & Co. stores in the United States, with the exception of Hawaii locations.