(TrendHunter.com) The Tiffany & Co. advent calendar has been unveiled by the jewelry brand to provide consumers with a way to spice up their holiday this year with a variety of opulent gifts for themselves or a... (TrendHunter.com) The Tiffany & Co. advent calendar has been unveiled by the jewelry brand to provide consumers with a way to spice up their holiday this year with a variety of opulent gifts for themselves or a...