Madagascar Agate Stone Concave Double Flared Ear Gauge Plug - 1 PairMadagascar Agate Stone Concave Double Flare Plug. Sold as Pair. A vailable in 2g, 0g, 00g, 7 16", 1 2", 9 16" and 5 8". The Madagascar Agateis special in its ability to help encourage positive thoughts and take control over negative thinking. These agates have a soothing feel to them, but since they are born of fire they also bring passion to one's life in very creative ways. They also have been known to aid Universal understanding and finding one's