I can't evey type this word out, because I do not know how to pronouce it. I notice this word when seeing it in the name of an actor for a TV drama, then I thought it to be 功，but it turned out it was not 工 on the left but 王, then I checked Xinhua Dictionary but couldn't get the answer.
基本字义 (basic meaning)
瑊 - 似玉的美石 (jade-like gemstones)
康熙字典 (Kangxi Dictionary)
In my opinion, naming a child '玉' emphasis his or her nobleness and being precious--(賈寶玉 is a good example). Some modest people might feel that is too boastful, opt for the more humble word '玏' instead. wishing the child will has noble-like quality, but can also relate to the common people.
It is 玏 (lè ㄌㄜˋ), means
似玉的美石 [jewel-like stone]