What is "muiraquita"

Muiraquitã (from Tupi mbïraki'tã, " knot of trees", from muyrá / mbyra, "tree", "stick", "wood" and quit, "knot", " wart", "rounded object"), is the name given to various types of old artefacts of Amazonian Indian origin, carved in stone (primarily jade, nephrite) or wood, and representing animals (especially frogs, but also others such as fish and turtles) or people. Muiraquitãs are often used as pendants, amulets, and in other decorative capacities.

In Brazilian folklore, there are a number of legends associated with the muiraquitã, to which supernatural qualities are often attributed.