3/4 ct Citrine Stud Earrings By Kari - September 25, 2015 580 Use $33 Off Coupon Code: SALE and get free shipping. Add a bright accent with these classic citrine stud earrings. Round-cut citrines totaling 3/4 ct are set in 10K gold. Pieces measure 3/16 by 3/16 inches.