# Seal Creation # Seal Materials # Tenkoku (Seal Carving) # Barin Stone # Lio Stone # Carving Knife ● These are stone materials for Tenkoku (seals). I received these from a calligraphy teacher over 30 years ago, but I don't know the material. I seem to remember being told, "It's easy to carve with a carving knife, so it's suitable for beginners." SIZE: Approximately 3 x 3 x 7 (cm) Material: Unknown (Barin Stone? Lio Stone?)