This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
珵 combines 王 (jade) with 呈, which likely contributes the sound. The exact historical development is uncertain.
The left side 王 suggests jade or a precious stone, and the right side 呈 looks like presenting something. Picture presenting a piece of jade, though the exact meaning is unclear.
For テイ, imagine a tea ceremony where a precious jade cup is presented: tea -> テイ, and the jade cup is held up by the 王 side.