Amazon Guidelines for Photographing Jewelry

I'm still struggling with the shiny object photos inspite of all the effort and assistance I've had recently. I went to see what else I could find that might improve my results and here it is:
Amazon States:
Jewelry Image and Data Guidelines
Image Format, Size, and Type Guidelines

Images must be border-free and on a white background.
Images must not include text, typeset, or your company watermark.
Products must be recognizable, in focus, well lit, and occupy 80%-90% of the image area.
Items must be outside any packaging, shrink-wrap or any type of display
No models wearing products.
The entire product must be depicted in the image – no part of the product can be cropped out.
Minimum acceptable size is 72 dpi @ 500 pixels on the longest dimension.
Maximum acceptable size is 300 dpi @ 2100 pixels on the longest dimension.
Images must be .JPG files.

Hopefully this will be just the knowledge it takes to improve my pics. A friend who is very creative and resourceful suggested placing a piece of non glare glass in front of the subject. That will be my next plan of attact if the above doesn't help.
I'm open to other suggestions so please post your methods here.