A very unusual piece, the agates in this necklace are dreamy. They have a transparency to them that is very attractive. If you are a stone girl like me, you will really appreciate this necklace! The necklace is 9k gold and is marked on the barrel clasp 9k. the central agate is 36mm by 23mm. The drop is 3 1/2 inches from the top of the oval piece to the bottom of the tear drop. Necklace length is 16 1/2 inches. Condition is very good. C. 1890 and English in origin.