Diamonds or pearls. Accessorizing for photos is completely different from accessorizing for life - you don't want "pop." Pop is going to completely distract the eye from your eyes, your smile, your interactions, and your e-ring. When I used to do engagement shoots I would request that my couples avoid stripes, pops of color, basically anything that will unintentionally ruin the images. Gold jewelry would look best, but silver and plat - and diamonds - will reflect the colors around them and look neutral. If you'd like to get creative then add texture, like stacking bracelets for example, instead of using color. And if you really want to wear your H bracelet, bring it with you but come with neutral jewelry on. You can tell your photographer that you've brought some accessories with pop and see if they inspire her for some special images.