jade ring, earrings, surname
璩 centers on ornamental jade objects, specifically a jade ring or earrings. The surname sense is a separate application of the same character.
璩 combines 王 (jade) with 豦, which likely contributes the sound. The character is used for jade ornaments and as a surname.
The left side 王 (jade) tells you this is a jade object. The right side 豦 looks like a wild boar with tusks, but here imagine it as a curved jade ring hanging from an ear.
For キョ, picture a jade ring so beautiful it makes you say 'kyo!' in delight. The sound 'kyo' cues キョ, and the ring is the jade ornament.