Holiday Christmas Gifts, "Private Eye Rosewood" by N & J. This Solid rosewood optical fun necklace is on a 30" gold chain. The teleidoscope itself is 1 3/8" long and has a 7/8" diameter at the lens end. The mirror system in this teleidoscope is not top of the line, but the image is not bad. A Bug eye lens like this takes whatever you point at and abstracts the image into little Squares like a dragonfly or fly sees like. What a great peice of jewelery to wear to the office. It's a great conversation piece. At $12.99 this is a great price. Made in the USA by N & J