You can't really nickname Jewel - and even if you could, it would dim the shine.
Famous people named Jewel:
Singer/songwriter Jewel Kilcher; singer Jewel "Sammi" Smith; actress Jewel Staite; adult film actress Jewel De'Nyle.
Your little Jewel will be a fan of the animated movie Rio, mostly because it features a character with her name: Jewel, the colorful macaw.
60+ Magical Mermaid Names For Your Little Beach Baby, Joyful J Names For Baby Girls, Lavish Names For Luxurious Little Ones, Girl Names That Don’t End In A Vowel (Or A “Y”), Wonderful Word Names Straight From The Dictionary, Girl Names People Won’t Shorten, Terrific Two-Syllable Girl Names, Blinged-Out Baby Names Inspired By Jewels,