How to solve the problem that alloy jewelry photographed with black background will reflect light on jewelry?

This metal is the surface of an object, if not matt.

If the back is bright, direct use of ordinary flash will reflect light.

Create a strong bright spot in the photo.

Or directly recruit revisers.

You can change the color of the bottom decoration item.

Change to a relatively soft background color.

It can be solved by adding a soft ring flash to shoot.

Of course, if your machine is a SLR.

If it's not a SLR

You can cover the flash of an ordinary camera with a layer of cellophane.