Hello everyone, a contractor had seen this rock in my yard and told me it might be very valuable and collectible
, i have a second similar one, could anyone tell me what it is or if it might actually have any value?
Looks like a hunk of gneiss, possibly. Unless I'm missing something, it's worth what someone might pay for it. Mountain ranges are made of it ( not entirely, but not uncommon ). Metamorphic, sandstone that was mashed and cooked miles underground, brought to the surface through uplift and erosion. It's a cool yard piece.
Since the OP didn't say where this rock is, it could very well have some value, there are many places in the USA that has no rocks to speak of nearby and landscapers have to pay a big increase in price for big rocks as they have to be shiped in from long distances and big rock are heavy and the shipping cost makes them very expensive.