Well know since many years as rarity, recently is available in good quantity with various colours and patterns. We call it jasper, but in fact is a spherulitic rhyolite highly silicified .Has been found on the south east cost of Madagascar (here the name..). Lately it seems that this small deposit has been clean out from Chinese people, they purchase lots of material. In the future will become surely rare, especially in the top grade quality (without cracks, holes and with good pattern).Hand polished on both side. Today , 2016 this material is practically disappeared from the market,except for low quality stuff. -updated June 2016-This piece has been taken from my personal collection.