Opal Circle Quantity:Single Which means that you can

Which means that you can wear it 24/7 without it tarnishing

The 10mm is great for lobes or conch

plus they are tarnish free

They are 18g and 21

It comes with an 18g 6mm flat back post

Opal Circle Quantity:Single Which means that you canSingle 3mm opal circle stud earring in silver. Available with an 18g, 6mm flat back post. Made from high quality, implant grade titanium, this earring is perfect for those with sensitive ears or other metal allergies. The metal will not rust, tarnish, or turn green, so our earrings can be worn for extended periods without stress. You can even sleep in them, thanks to the comfortable flat back post. Simply put your earrings in and forget about them