They appear to be rough emeralds. Did you find them? If you did and you want to keep it quiet you can pm me. If the green rocks can scratch glass, I would say most definitely. If you tell me generally where you found them like outside of Bogota, Columbia, I will check and see if emeralds are found near where you discovered yours. If they were passed to you in a collection or you bought them, the source may have better information. it would behoove you to have them checked out. Just take one to a jeweler and have it assessed.