Unlike the glass mirrors of today, mirrors in Bible times were generally made of metal that was highly polished ​ — usually bronze, but possibly also copper, silver, gold, or electrum.
Berbeda dengan cermin kaca yang ada sekarang, cermin pada zaman Alkitab biasanya terbuat dari logam seperti perunggu, tembaga, perak, emas, atau emas putih yang dipoles.