In its most iconic form, turquoise looks like a clear blue sky. Beneath that tranquil surface, however, there is a complicated stone. ‘‘It is not about color,’’ said Joe Dan Lowry, co ...

The stone spans from blue to green in color. Occasionally, a dark, spiderweb likeness, known as a "matrix", can be found on the stone.Turquoise is mined in Iran, New Mexico, Arizona, Nevada and ...

Turquoise has been used in some of the Van Cleef & Arpels’ most precious creations, including the incredible 1974 bib necklace Eva Mendes wore to the 2009 Golden Globes; and in last year’s Le ...