This piece of UV (ultraviolet) beach glass was found on Seneca Lake - one of the Finger Lakes of NYS. This is a fairly large piece of patterned UV beach glass (see photo) that has been smoothed by the wave action over many years. I collect beach glass from both Seneca and Cayuga Lakes and have found a number of green ultraviolet pieces. This type of UV glass will glow when placed under a black light. You can purchase a UV flashlight online for very little investment to enjoy the glow of these UV pieces. This will make a great addition to your beach glass collection.