I am quoting to lay diamond shape Carrara marble tiles in an orangery. No problem with fixing but have also been asked if I can age the marble to make it look as if it has been down for hundreds of years. I have heard of Marble being stained with tea before but never seen it done. Anyone know how to do this or someone who could do this process. I would rather just fix. The marble and not get involved with the staining. Job is in London . I already have antique French octagon and cabachons with borders to install in other areas. Good job to get in on.