noun
unpolished and uncut gem
Rare literary term for a gemstone in its natural, unworked state. Often used metaphorically for hidden talent or potential. The more common synonym is 粗玉 (あらたま).
See also: 粗玉
彼の才能はまだ璞玉のようだ。
His talent is still like an uncut gem.
この原石はまさに璞玉である。
This rough stone is truly an unpolished gem.