“Unlike other brands mentioned here, Menē exclusively works with 24-Karat gold. Each piece is priced based on the real-time value of the pure gold weight, plus a design and manufacturing premium, which means that the price for a piece can change depending on the day. According to the site, "this premium is never more than 20 percent of the precious metal value each day. The result: a $500 Menē ring will have at least $400 in gold or platinum value at the time of purchase while $100 is the revenue earned by Menē."”