About: http://webisa.webdatacommons.org/404260755

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	it is just that marble and other stones are very tricky to work with.That out of the way, yes, you must use epoxy for the setting material, and no, you do not need to use epoxy grout.
http://www.w3.org/ns/prov#wasQuotedFrom	terrylove.com