Quote -  Thanks for the great tips 50parsecs!

Another way to make simple stones meshes that are similar to Bryce stones and can be a little more varied in shape is to use the Organic construction method in the Vertex Modeller:  

Insert Vertex Object, using polyline tool draw an irregularly shaped polygon with 5 or 6 vertices, then fill the polygon ("cmnd/crtl F" or menu Model>Fill Polygon).  Then hit menu Construct>Organic and you'll get a low poly mesh stone.  From the Properties tray, apply Subdivision Smoothing to taste.  

50parsecs' sphere-based stones are probably better for many purposes (easier, lighter on resources), but Organic stones can be handy when you want stones with more "lumpy" shapes.  The stone in the pic came from a 6 point polyline, and ended up with 30 polygons and 45 vertices.  

Thanks very much!  I never fail to be amazed at the abilities of Carrara!

Kevin

The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' (I found it!) but 'That's funny ...'
Isaac Asimov (1920 - 1992)