This is a beautiful sterling brooch by Danish silversmith, Hans Hansen (1884 - 1940). This design by Hansen is most commonly found in all sterling - I have never seen one set with bloodstone before. It is signed with the Hans Hansen mark along with 925S, DENMARK. The pin measures about 1 5/8 inch x 1 1/8 inch and is in excellent condition. Hansen pieces are similar in style to Georg Jensen and, in fact, the companies later merged. Jewelry production began in 1906 and was popular in the 1930's.