I don't think so, T-rexes are carnivores, not rockyvores.
Trex
Capitalize trex when you are using it as a proper noun, such as a specific thing or trademark.
You can cut a diamond with a laser -- because of its value, you might not want to 'break' it.
Diamond cannot break.
Yes
trex
Anything can 'break' a diamond should it strike the diamond in its weak spot -- a flaw, because a diamond has perfect cleavage in four directions.
diamond it is the only thing that can break a diamond is a diamond
Diamond is the hardest substance known to man, so it can break most materials. Obsidian is a type of volcanic glass that is very sharp and brittle. Diamond can break obsidian.
is trex decking safe for dogs?
A diamond fracture is a break or a crack in the stone.
Probably. But this is a poor use of a diamond. If you want to break a mirror, most any object pushed or pitched against it will break it.