pearly
玓 centers on the lustrous, shimmering quality of a pearl: something pearly or gleaming softly.
玓 combines 王 (jewel) with 勺, which likely contributes the sound. The character expresses the gleaming quality of a pearl or gem.
The left side 王 (jewel) and the right side 勺 (a ladle shape) together suggest a pearl resting in a ladle, its surface gleaming softly.
For テキ, imagine a pearl so bright it could be used as a tiny tech light: tech -> テキ, and the pearl glows like a small LED.