Do your research when selecting a store. It is easy to go online and look up several statistics about the organization. If they are an established business and have been around for a long time, they will proudly display this information on their website for each potential customer to see. If they are just starting up their business, they may not need much information about their products.
Read the reviews other customers have posted. There are numerous third party companies who list reviews for each business out there these days. These reviews are generally from real individuals who have purchased a product or service coming from that company and so are willing to share their particular experience to better advise others of the form of company they are coping with. If someone posts a bad review, the jeweler is more likely to right the problem and make the consumer happy again.
Ask your friends which jeweler they use. Feel free to submit on Facebook or ask your friends the very next time you see them. Even if you not have seen these people in years, they may have substantial knowledge about a jeweler because of a personal experience. They might also be able to provide ideas or discounts. You could be friends with the who owns the company and not have any idea! Your friends will always be completely honest about their experiences. No one likes to squander their money on a terrible product.
At the end of your day, az jewelry stores are made up of people, like you and I. People are proven to make mistakes from time to time, thus try not to be so quick to judge if something comes up. Wait to see how the jeweler reacts to the delay or perhaps problem. If they respond in a professional manner, then you know you have found a good jeweler you can depend on. This may take some time and energy, but the results is going to be satisfying when you know you can trust your jewelry with a expert.