So what do you do with your spare time? You can rest, that is a valid option but frowned upon in some circles. You can take photos of details, signs, food, etc, or you can take photos of the rings.
My specialization is portraits, and that is the main reason for why I get hired, but that said when approaching the rings I wanted to do the best I could, because I didn't want to be limited by what I am naturally good at.
I got this recommendation to put the rings on a mirror, but I couldn't find one and didn't bring one with me. Luckily for me I brought a shiny dress to do this, a dress I used before on an artistic photoshoot because I liked how it looked when using a shallow depth of field in the sun.
I also brought with me a Tamron Macro 90 2.8 lens and a portable light tripod. For the lighting I had an assistant hold a Westcott IceLight for me. I put the ring on the dress, set the aperture to 8.0 or more and took the photos. It is important to know that you use a much more closed aperture setting that you would use for let's say closeup shots of a face if you want the rings to be in focus. A good tripod definitely would come handy here as you can set your shutter speed to a slow exposure so you wouldn't have to use high ISO for these shots.
I decided to use a different backdrop for my last rings photoshoot. My assistant brought her tablet with her and we placed the rings on it. At first i used a black background.
It kind of looks like a mirror. Then we switched to a white background.
I did like the IceLight reflection on the tablet and decided to use it.
Then we loaded some photos from the client's Facebook page to serve as a background.
You could probably also use a phone, especially if it has a large screen, and even your laptop, especially if it is as flexible as my HP Envy x360. Potentially you can also do this without a Tripod as long as your hands are stable, your shutter speed is around 1/200, your camera or lens has a good stabilizer and your camera handles high ISO well.