I needed cards for a 25th (silver) and a 60th (diamond) wedding anniversary. I think this card will work nicely for both with silver glimmer paper and Rhinestone jewels.
Card: 6x3
Silver Glimmer: 5 3/4 x 2 3/4
Whisper White: 5 1/2 x 2 1/4
Organza Ribbon