וְעָשִׂ֧יתָ עַל־הַחֹ֛שֶׁן שַֽׁרְשֹׁ֥ת גַּבְלֻ֖ת מַעֲשֵׂ֣ה עֲבֹ֑ת זָהָ֖ב טָהֽוֹר׃
And thou shalt make upon the breastplate plaited chains of wreathen work of pure gold.
Read halakhic rulings (Jewish law) on Exodus 28:22: and classical halakhic sources.