Aristotle, Pliny the Elder and Marco Polo all mentioned Persian turquoise in their writings. It has a clear sky-blue color and now is available on the secondary market from dealers with old stocks.

One of these is the Triumph of Love tiara, otherwise known as the Persian Turquoise, which was last worn by Princess Margaret. By Lauren O'Callaghan. 04:01, Sun, Mar 22, 2020.