Jack Weinstein is a crook. Did business with him in the mid 1970's and he switched stones on my wife's ring. He opened up a small store on Fremont street in the late 60's his little stock was used jewelry bought from most likely desperate gamblers and thieves. Stay away from anything with the Weinstein name on it. This is a 1000% honest review. He was charging 4x plus for what he most likely paid for the crap he carried in those years. I will never forget what he did.