it is in the mantle
You can write with a soft stone on a harder stone; writing with chalk on slate is a familiar example.You can also write with a hard stone on a softer stone, using the harder stone as an engraving tool. There are a lot of examples of this on paleolithic artifacts.
Slate is so hard because it came from shale that is put under pressure with high temperature. The clay composition of shale converts to mica, making it hard.
It takes a cotton buffing wheel and a pumice stone-time consuming and messy
34 percent was granite dimension stone, 28 percent limestone, 16 percent sandstone, 5 percent marble, 1 percent slate, and 16 percent other types of dimension stone.
quarry
A ROCK QUARRY
Quarry.
in a jar
You can paint anything, as for glaze I would suggest a glazed sealer, it will make the stone or slate shine plus water proof the cement, slate or stone
it is in the mantle
Stone.
stone from the earth....
Slate.
Slate
You can write with a soft stone on a harder stone; writing with chalk on slate is a familiar example.You can also write with a hard stone on a softer stone, using the harder stone as an engraving tool. There are a lot of examples of this on paleolithic artifacts.
Frank Eliscu has written: 'Slate and soft stone sculpture' -- subject(s): Sculpture, Slate sculpture 'Slate and soft stone sculpture' -- subject(s): Sculpture, Slate sculpture 'Direct wax sculpture' -- subject(s): Wax-modeling 'Sculpture, Techniques in Clay, Wax, Slate' -- subject(s): Modeling, Sculpture, Technique