U+781B "砛" CJK Unified Ideograph-# Unicode Character

U+781B "砛" CJK Unified Ideograph-# is a rarely used Chinese character that falls under the radical for "stone" (石), typically appearing in ancient or historical texts rather than modern standard language. Its pronunciation in Mandarin is roughly "jin," and it was historically employed to denote a type of jade or precious stone, though its exact semantic range remains obscure due to its infrequent usage. In the context of the CJK (Chinese, Japanese, Korean) unified ideograph system, this character is part of a comprehensive effort to encode shared East Asian logographs, preserving obscure or obsolete characters for scholarly, historical, and linguistic purposes.