I'm not 100% certain if this is genuine jade, but it definitely has the look and feel of jade.  Buyer beware; I am not guaranteeing it is genuine :)

This bamboo-shaped brooch measures just over 1 3/4" x 1 3/4" and is set on a gold-tone setting.  The pinstem and fastening mechanism are both present and operating.  I have looked this brooch over with a loupe and see not cracks or chips.  It is in very good condition.