SEMI-PRECIOUS GEMSTONE EAR PLUG BODY JEWELRY. These Black Agate stone plugs are beautifully crafted pieces of body jewelry. The wearable diameter on each plug is around 10mm (3/8?). No two plugs are exactly the same as they are hand carved, not machined, from natural stone. Each ear plug is sold separately. Traditional properties of Agate are strength, protection, courage, and healing. Agate allows the person wearing it to choose their friends carefully. Agate's most noticeable properties overall are balancing yin/yang energy, courage, protection, healing, and calming. Plug Size: 6 Gauge (4mm) Brand: FreshTrends Age: Adult Condition: New