Qorveh porcelain is another prominent crystaline stone in Iran It is usually processed as stone slabs It is among metamorphic stones and has fine and clear crystals. Qorveh porcelain stone has a mostly white background color with gray streaks and halos in some varieties, these lines and halos are more crowded, while in others, they are more sparse. Additionally, honey-colored streaks are observed in some sorts.

Sabalan Stone 2023.