Human: How can I find the best place to buy a diamond engagement ring? Assistant: 
You should start by doing some research on the different types of diamonds and where they come from. Consider what kind of cut, color, and carat you want in your ring before deciding on a retailer or jeweler. Once you have narrowed down your selection, compare prices and read reviews to make sure you're getting the best deal. Finally, make sure that the store you choose is reputable and has good customer service.