Reading the last word of each stanza, I realised you used tides and hairs and thought this symbolised the imagery of ‘molten’ glass. I enjoyed this image but I also then saw you used places, that made us, worth salvaging.
When you reduce the last 2 stanza (and singe line) it produces this story. That glass is an ancient record of the past and its past is what makes it worth recovering. I want to ask you if this is a perspective you had in mind when writing this?