I don’t know if there are restrictions on the use of actually dino
bone, but I think you could find out at the US Customs site or by
googling “exporting fossils”. I think the bones might be somewhat
fragile and petrified specimens which have been turned into stone
would be better for jewelry. Petrified wood and turturella agate come
to mine for starters, also coprolite (petrified dino dung, no
kidding). Trilobites and crinoids, too.
I’m not sure why you’re seeking a wet bandsaw. There are such things
for cutting irregular shapes out of rock slabs, but cabochon rough is
usually cut with a rock saw with a circular blade. You can find them
with a 6t inch blade up to about an 18 inch blade. A new 10 inch saw
with feed, which you could use for garden variety agates and jaspers,
would go for about $1000.
For more precious material you’d want a 6 inch saw with a thin blade
or even a 4 inch faceter’s saw with a blade as thin as 0.008". For
cutting cabs, either traditional ovals or free form "designer cabs,"
you’d want a Genie or Pixie (google those) or similar which is
basically a Baldor double shafted motor with a graded series of hard
resin and soft wheels impregnated with diamond grit. These are also
about $1000. You might investigate making your own equipment or
buying off Craigslist or at one of the larger gem shows where some
used equipment might turn up. If you find a friend at the local
lapidary club who has a bigger saw to cut up some of your large rocks
into smaller pieces (maybe on shares), you can make do with a small
six inch saw and a horizontal lap with changeable pads, or a used
If you could say more about what you plan to do, I or others might
be able to advise you better. There could be a local lapidary club
where there are machines you could learn on or a member who would
allow you to cut and polish in their shop. I have a lot of equipment
and rock and would be happy to share with learners in my area, as the
stuff mostly sits idle until I have a project.