This delicate Star of David pendant was purchased by my mother in 1971, in Israel. The metal has tarnished slowly with time (as is expected with stelring silver); however, this tarnish cleans off easily with silver cleaner. On the back of this pendant are the markings "Israel" and "925." The chain in the first photograph is NOT included in the sale of this item. This style of Star of David pendant was made with 12 different possible cabochons, each one being a different birth stone. Onyx is the alternative birthstone for December. The central cabochon sits within a bezel mount. Approximate Dimensions of pendant: Height: 1.25" Width: 0.75" Depth: 0.0625" (1/16") Weight: <1 oz