In most cases you can, rocks and stones survived high temperatures, pressure for ages before you take a piece in your hand.
Just one thing - "soft" stones (like marble, travertine, etc) usually are pretty fragile, they have "veins" in their structure (inclusions of minerals) and may thermal shock (they sometimes crack even if you saw them using a tile saw with high quality blade for cutting stone, thin and pretty expensive). Travertine and other stones with porous structure do not distribute heat well.
But in general you can if you have a piece of stone with uniform (virtually) structure. And you can always put in your kiln (sand used in glass production also was a stone ages ago before time, wind, temperature and moisture did their job....). It may be tricky to retain a piece evenly heated depending on the size and form of the stone, but why not.
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