I am not an expert in determining genuine from imitation jade, so rather than deceive my customers, I am just going to say this is 'jade colored' or 'jade-like'.  I will tell you that it is definitely COOL!  This necklace measures 16" long and the center leaf-shaped stones measure 1 1/2" long.  The beads are 6mm.  The backs of the larger leaves appear to have natural flaws on them; at first it looked like chips, but upon closer inspection, it appears to be a genuine flaw or fault in the stone.  Other than that, this necklace appears to be in very good condition.  Perfect for St. Paddy's Day!