Proprietors of two different businesses informed me of a well-known jeweler in the area who was/is allegedly engaging in all sorts of villainy, including selling chinese turquoise as "Bisbee Blue," stamping estate jewelry with his hallmark, and promoting blue calcite as "blue ice," which he is cabbing and selling as a hot new gemstone (the stuff has a hardness of 3, you could probably scratch it with your fingernail). So the area jewelers know about the unethical conduct, but the question is, what regulatory oversight is there to prevent or abate the unethical conduct?
There is a an organization called the Jewelers Vigilance Committee
(JVC), in NYC, (and online) who do provide some regulatory oversight.
You should absolutely report this type of dishonesty to them. They
will listen to any complaints and they usually will take some action.
Incidentally the organization is supported by all of us honest
jewelers and you should all pay up your dues and join so that they
have more money to work with to achieve more oversight.