A round-cut stud anchors the top, an oval-cut stone drops below it — two cubic zirconia shapes on one silver earring, 10-12mm at the drop. More movement than a plain stud, lighter than a true statement drop.

Pure White Round-Cut Cubic Zirconia diameter: 6 mm
Total stud earring diameter including the Organic Bezel: about 8 mm/9 mm
Pure White Oval-Cut Cubic Zirconia diameter: 8 mm x 10 mm
Total dropping earring diameter including the Organic Bezel: about 10 mm/12 mm

By far the easiest and safest way to clean your jewellery is with warm water and  detergent-free soap. Then, run it under some clean water and dry the piece carefully with a jewelry cloth.