fine jade
璿 centers on fine, high-quality jade, a precious and beautiful stone.
璿 combines 王 (jade) with 睿, which likely contributes the sound and may relate to depth or wisdom, but the exact historical development is uncertain.
The jade radical 王 on the left marks it as a precious stone, while the right side 睿 looks intricate and refined, like a piece of fine jade carved with deep, wise patterns.
For セン, imagine a fine jade pendant worth a thousand (千, せん) coins: 千 -> セン, and the jade's value is clear.
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