The name Giada is a girl's name of Italian origin meaning "jade". Giada and is often added to lists like Jewel and Gemstone Baby Names and discussed in our forums with posts like "What would be the perfect twin?".
From the experts:
Giada is a fresh spin on Jade, which has been quietly and stylishly used in English-speaking countries for several years now. Popular cook Giada De Laurentiis made this a possibility, then semi-subtly self-referenced when she named her daughter Jade.
Giada was on the U.S. pop list from 2007, five years after the debut of DeLaurentiis's Food Network show, to 2013, but has since dropped off.