Double flared plugs made from natural Tiger's Eye stone, Tigers Eye is a crystal with bands of yellow-golden color through it. In feng shui, tigers eye is used for its supposed property of protection. It is said to bring luck and abundance. There is no 12mm size of this particular item as it was was manufactured using American Gauge sizes. The closest to 12mm is 1/2" which is 13mm.
Unless clearly stated otherwise,
the price is for one piece, not a pair.