Product information : Material: porcelain Patterns: gradients Color classification: Ear Bowl-Navy Blue Ear Bowl-Marble Grey Ear Bowl-Starry Blue Ear Bowl-Blue Crystal Stone Grain Bowl-Marble Grey Stone Grain Bowl-Starry Blue Stone Grain Bowl-Blue Crystal Stone Grain Bowl-Wulan Coarse Point Grand White Rock Grain Bowl-Rusty Point Grey Stone Grain Bowl-Navy Blue. Tea tableware technology: colored glaze