Here’s the best way I’ve found to enlarge images on the Getty website:
1. Click on the image above to load it on Getty’s site.
2. Right click on the image.
3. Select “copy image address.”
4. Paste the address into a new browser tab/window
For me, this brings up the largest possible image preview offered by Getty. Hope it works for you — and hope it helps you identify some of the lovely jewels above!