This stone can be seen from the cairn at the Mill Of Brux. Therefore follow the road in a south easterly direction until Easter Sinnahard farm. I walked to the top of hill to the west of the farm, to avoid scaring cattle, then turned north. Walk the length of the field with stone being in the middle of the next one. It stands all by itself but is spied on by at least four quite close cairns.
Once again, thanks to Rhiannon and her fantastic folklore!
I imagine this folklore also refers to the stone: "At Sinnahard, Towie, there is a standing-stone near which a pot of gold is said to be buried. On one of my visits a good many years ago, the farmer announced that he had no faith in the tale: the only gold he hoped to gain from the place was that of the golden grain then ripening for the harvest." (from Ritchie, J., Folklore of Aberdeenshire Stone Circles, in Proc. Soc. Ant. of Scotland, LX, 1926, pp304-313. )