tekstur
klastik, piroklastik
foliated
warna
coklat, Abu-abu, kuning
biru, kebiruan - abu-abu, ungu, nuansa biru
pemeliharaan
lebih
kurang
daya tahan
tahan lama
tahan lama
tahan air
✔
✘
✔
✘
tahan gores
✔
✘
✔
✘
tahan noda
✔
✘
✔
✘
tahan angin
✔
✘
✔
✘
tahan asam
✔
✘
✔
✘
penampilan
kusam, vesikular dan foilated
kusam dan banded