The word "珠玑" is formed by combining two pictophonetic characters: "珠" meaning pearl, constructed from the semantic radical "玉" (jade) indicating precious stone, and the phonetic component "朱" (zhū) suggesting pronunciation; "玑" meaning irregular pearl, similarly uses the radical "玉" for meaning and "几" (jī) for sound. Together, they create a compound word denoting pearls and gems, with the shared radical reinforcing their semantic relation to valuable objects.