Feitsui

Feitsui: The Chinese name for a highly prized variety of pale green jade; the royal stone of China.

Feitsui
Feitsui is the royal stone of China, a highly prized variety of pale green jade ...

Feitsui: The royal stone of China, it is a highly prized form of jade.
Feldspar: A family of minerals that includes amazonite, moonstone and sunstone.
Ferrer's Emerald: An imitation emerald made of glass.

See also: Oval, Minerals, Feather, Figaro chain, Figogucci chain