Sonora Jewelry is a small family owned business that began over 40 years ago in Walnut Creek. Louis Mastro is an extremely gifted goldsmith and custom jewelry designer. The sales team, cad design team and our jeweler all work together to create a very unique and specialized jewelry buying experience. We know that our customers have many options when it comes to where they buy their jewelry. We treat each customer as we would treat our closest friends. We believe our success is due to our Loyal Customers that trust us with all of their jewelry needs that mark all of their special moments.