Oval Stud Earrings - Red CZ Elegant Ruby Oval CZ Stud Earrings give you a royal look for less! Look sophisticated and elegant with our Ruby Oval CZ Stud Earrings. Each ruby stone CZ within these ruby stud earrings is approximately 8 x 5.5 mm. Great for anytime wear or to your next event. Weight: 2.2 grams per earring.