“Miracle” vintage Connemara marble brooch/pin of four stones circling one very large stone in the center.  Brooch is set in a lovely thistle style.   The metal back of the brooch, with security clasp, is believed to be rhodium-plated. 11/2" in diameter.  

Connemara marble is known as the Irish gemstone and is mined in the west of the country.  “Miracle” is the trade name of A. Hill & Company Ltd. of Birmingham, England, est. in 1946, and is still the leading designer of jewelry in the Celtic, Irish and Scottish style. $60.