I would like help to identify this Stone. I found this stone in my back yard. I would just like to know if it is worth anything or if I'm just going to add it to the driveway.
It appears to be a tumbled agate either by river action or by man. Is it semi-translucent meaning that if held in front of a light, can you see partly through it. A simple test to begin in identification is by the moh hardness test. Agate is around 6.5-7 which is harder then glass or steel. You shouldnt be able to scratch agate with a knife but agate will scratch the knife.