7 New Acrylic Ring Displays For Jewelry Showcases & Countertops. This is a new set of 7 round acrylic ring displays. These acrylic ring stands are a great way to display rings on your counter tops or in a showcase. Each display measures approximately 3/4" ( 19 mm) in diameter. The height varies from 3/8" (10 mm) up to 1 3/4" (44 mm).