Vintage lucite mod Op-Art ring features a huge 1-1/2" ball with a concave central depression that shows a design within is made of transparent turquoise lucite. This ring is amazing and we have never seen another like it. It is a Ring Size 7 and is in Excellent Condition. Groovy! (#27362-LuciteRingVintageModBallTurquoise) To order this Vintage Mod Op-Art Ring, just click on the blue shopping cart button to the left of the picture, or email us at: Adon13@aol.com or telephone us at 773-929-9007 or fax us at 773-525-1920.