Josiah K. answered 20d
Biology Tutor | Research | HS & College | Spanish Fluency
You can also consider shooting on a used screen or phone screen surface. The screen creates a black reflection that reflects the jewelry. This can be a desirable effect, but you have to shoot it at a specific angle. Also the screen needs to be turned off. I would use a diffused flash and control your background to create the colors you want to see in the photos.