Soapstone is a soft stone that is easy to carve. The hardness, color, and structure differ depending on its origin. With just waterproof sandpaper and some water, you can easily turn a rough stone into a beautiful gem. After drying, it is advisable to rub the stone with wax to regain its beautiful and surprising colors. The large stones can be made smaller with an old wood saw.
There are lots of great videos on how to carve soapstone. Perfect for middle schoolers and older.
Soapstone 4lb package
Pieces of 10-100 g/0.35-3.52 oz