There par with Duan inkstone.

有与端砚齐名的歙砚。

Inkstone originated in Neolithic age.

砚发端于新石器时代。

Inkstone stone material texture differ?

砚材石纹理有何特点？

Inkstone material production in what place?

砚材产在什么地方？

Inkstone is essential to Chinese calligraphy.

砚是中国书法的必备用具。