[TaMoDee]

"Common" was over stated. "Occurs" is more like it.

I'm researching sources for the locations for you. I saw the crystals about 20 years ago. If I find/remember the location I'll let you know.

The crystals are available from various sellers on the internet who state that the crystals are from the Mojave Desert.

[Bernard Marx]

If I find/remember the location I'll let you know.

I'd be interested. Most gem peridot in the U.S. comes from Arizona. There are also a few occurrences in New Mexico and Hawaii (it's the only gem found in HI). It would be interesting to find a California peridot.