白陶硯　White Ceramic Inkstone – “Hakutōken” Designed for Colored and Metallic Inks

金銀墨、朱墨、際墨といった黒以外の墨を磨る硯です。もちろん普通の墨も磨れますが、色物の墨はその色合いを見るときに、黒い普通の硯で磨ると、硯の色と干渉し合い正確な色合いを見ることができません。また、磨ることにより硯も少しづつ減っていくためその粉も絵具の中に混ざり特に白い色は影響を受けやすくなります。この白陶硯はそういった点を改良し、金銀墨、朱墨、彩墨、写経用金錠などの専用の硯として開発されたもので、海にある小さい窪みは金錠用です。
重量 : 約157g
寸法 : H98×W68×D20mm

The Hakutōken (白陶硯) is a white ceramic inkstone specially designed for grinding non-black inks such as gold, silver, vermilion, and colored sumi, as well as gold ink cakes used for sutra copying.

While standard black inkstones can also be used, they interfere visually with the true color of non-black inks, making it difficult to assess their hue accurately during grinding. Moreover, as traditional inkstones wear down with use, fine stone particles can mix into the ink, which is particularly problematic when using white or light-colored inks.

The white surface of the Hakutōken prevents such interference, allowing you to see the ink’s natural tone clearly and grind with greater purity. A small indentation in the “umi” (the deep part of the inkstone) is specially included for grinding gold ink cakes (kinjō).

Specifications
• Weight: Approx. 157 g
• Dimensions: 98 × 68 × 20 mm
• Material: White ceramic
• Use: Ideal for gold/silver ink, vermilion ink, colored sumi, and sutra-copying gold ink

This inkstone is also suitable for standard black ink, but its primary purpose is to ensure color fidelity and purity when working with delicate, pigmented, or metallic inks.