Sand (http://maplered.com) Stone (http://g603.net) machining

Hello
I am an amateur Stone (http://g603.net) sculptor interested in machining/turning Stone (http://g603.net) . In particular sand (http://maplered.com) Stone (http://g603.net) which can be quartz laden. If you have a minute spare, Can you please offer some advise on appropriate tools to use in a lathe set up that won't wear quickly when working sand (http://maplered.com) Stone (http://g603.net) s.
Regards
Dennis
Australia