A pearl is encased in a half sphere of gold at a 90 degree angle and placed on a post. By playing with the angles, you can choose to expose more of the pearl or the gold. Comes with an 18K yellow gold earring back. Also available in pearl setting angles of 0°, 45°, 135° and 180°. Post length: 11mmEarring back length: 7mm. Akoya pearl: 7mm. This is a single earring.