A Chinese historian writes about pearls for the first time.
653 FIFTH AVENUE
In 1917, Pierre Cartier traded a double strand of natural pearls for a mansion on Fifth Avenue in New York City.
Kokichi Mikimoto successfully cultures a pearl in Japan.
MINERAL: Calcium Carbonate
COLOR: White, black, gray, yellow, orange, pink, lavender, green, blue
REFRACTIVE INDEX: 1.52 - 1.69 span>
SPECIFIC GRAVITY:2.60 - 2.85
MOHS HARDNESS:2.5 - 3.0