Here is a pair of chunky sterling half hoop earrings by Tiffany & Co. From top to bottom they measure 7/8". The opening measures 1/2". They are 1/4" thick and taper down to 1/8" near the post. They are stamped T & Co. 925 on the ends of the earrings and also on the posts. The weight is 6.62 grams. Sorry I don't have the backs. Excellent condition.
Tiffany & Co. Sterling Silver Half Hoop Earrings