beautiful jade, tinkle
璆 centers on beautiful jade, with the tinkle meaning likely an extension of the sound jade ornaments make when they strike each other.
璆 combines 王 (jade) with 翏, which likely contributes the sound. The character is rare and its exact historical development is uncertain.
The left side 王 is the jade radical. Picture a beautiful jade ornament on the right side 翏, with its feathers and delicate lines suggesting the tinkling sound it makes.
For キュウ, imagine a beautiful jade pendant that makes a cute tinkling sound: cute -> キュウ, and the jade is beautiful.
—
echoing beautifully (of the sound produced by striking together jewels or metals); beautiful (of a melody, etc.)