Back to the beach

We took ourselves over to ‘our’ beach on a nice day , though our drive there is a bit longer with our new home being about 9km further away than previous.
There is no need to show the beach as I’ve shown it in many previous blips and it hasn’t changed much, here however, is a small piece of glass found on the beach and I wondered how long it would have taken for it to become so opaque and smooth.