Hard and solid

Tiny Tuesday, hard and solid. These little stones certainly are. I have probably blipped them before. Three of them I bought in the Orkney Islands and the little bluey one plus the striped one are from a collection my BIL polished for me many years ago . Way back when the children were small we were avid stone collectors. We would search the beaches for NZs semi precious gem stones and the kids would fill there sand buckets with pebbles. I have no doubt blipped them or the like before, however I didn’t have a blip and these seemed to fit the challenge