Soooooo what ya think....... another fast sell device before people realize it doesnt work on GOLD? If it does, i suspect the Aussies and S. Africans will be buying them like hot cakes. Us beach people are attentive to surface finds and we all know just a twinkle of light the right direction gets us moving. Thou it might be in the divining rod or one of those gold finding gun categories.
Sometimes I have to change the batteries on my Streamlight flashlight and after having done so I turn off the desk lamp to check how bright the light is. Placing the flashlight on the top of my desk, I see all kinds of particles from dust to you name it that I couldn't see in normal overhead lighting.
Maybe it would work. Who knows.