This is one gorgeous necklace with a pendant! Sterling Silver 925 stamped box chain necklace measures 20 inches long. The Navajo pendant is sterling also with blue/green opal inlay... just gorgeous! Has sterling and the letters BP on the back. I was told from the person I received it from its Navajo, and the BP stands for Ben Peter. I am no expert by far in Navajo. All I can do is tell you what I was told by a person who knows everything about Navajo Jewelry.   Again, it's a gorgeous set here! An eye catcher for sure. Also, check out my other listings for more nice items! Thx