The farms around Nipomo, California has
produced several types of agates including sagenite types.
The agates are colorless to gray, often with tan to yellow
sagenite inclusions. There are reports that some sites are
already exhausted while other places are closed to any
further collecting. The agates with marcasite
inclusions have been found there also, but I tend to avoid
collecting anything with marcasite because they release
sulfur in humid conditions.
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