This pendant is made of brass wire - that was most likely originally gilded.  In the middle is a piece of mottled & cut green bakelite.  The chain is not original but the colour of the metals match and they look as if they belong together!  I think this looks like late 40s or early 50s  the total length of the pendant is nearly 3 1/2 inches.  The length of the chain is approx 19 1/2 inches.  Love this - it just looks so different! Ref: 2377 B95/10