tekstur
aphanitic, granular
terikat, foliated, besar-besaran
warna
abu-abu gelap ke hitam
hitam, coklat, hijau, Abu-abu
pemeliharaan
kurang
kurang
daya tahan
tahan lama
tahan lama
tahan air
✔
✘
✔
✘
tahan gores
✔
✘
✔
✘
tahan noda
✔
✘
✔
✘
tahan angin
✔
✘
✔
✘
tahan asam
✔
✘
✔
✘
penampilan
vesikular
foliated