So my questions are how is Louisiana opal sold by the gram or by
the caret and where could I get an accurate estimate of its value.
One piece weights 386 grams the other 187 grams as well as several
Craig, I read the same article. However, the Louisiana opal I saw
for sale in Quartzsite this year was not selling by the carat or gram.
The price depended on quality and the material was sold by the piece
without much regard to weight. The opal is in a sandstone matrix and,
for the most part, is not especially good for jewelry (that’s only my
It is rare and I believe it has much more value to collectors than to
jewelers. You might try your inquiry on the Rocks and Fossils list
email@example.com, which is populated by mineral and
fossil dealers. It would also be helpful to post a photo along with
the request for