There are services you can buy via subscription to save you dozens of hours each month for "speed to market and personalization". Email addresses are tougher (and pricey) - not easily accessible.
If we can agree that contact databases are not 100% accurate but will get you started, check out:
G2Crowd has a list of "competitors"
I have subscribed to SalesGenie for 7+ years. Which service you go with will depend on answers to more questions. :)
As a sample - to get you started, here is a list of 500 Jewelry Brokers (wholesale) you might find useful.
SalesGenie offers many more details.
SalesGenie and other companies offer services to send emails direct (but it costs a pretty penny and it will be important to have a good plan in place to get the best response and ROI)