Peridot is treasured in Hawaii as the goddess Pele's tears. The island of Oahu even has beaches made out of tiny grains of peridot.  Although Hawaii’s volcanoes have produced some peridot large enough to be cut into gemstones, virtually all peridot sold in Hawaii today is from Arizona, another state with extreme geology.
The fresh lime green of peridot is its distinctive signature. Its spring green color also is ideal with sky blue. More information on Peridot can be found here. 
 
FACTS
 
MINERAL: Olivine
CHEMISTRY: (MgFe)2SiO4
COLOR: Yellowish green
REFRACTIVE INDEX: 1.65 to 1.69
BIREFRINGENCE: 0.035 to 0.038
SPECIFIC GRAVITY: 3.34
MOHS HARDNESS: 6.5 to 7
-Source AGTA, GIA
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