Peace by piece $20.00 Inside Message Blank Inside Packages of Heartstrings® cards are shrink-wrapped and sold in sets of 10 cards with envelopes. The actual card size is 4 1/4" x 5 1/2". Peace by piece quantity Add to cart SKU: 1008. Categories: Christmas - Holiday, Peace. Related Products Go to the Forest $20.00 Oh What Fun It Is to Ride $20.00 Snowflakes Pinecones $20.00 Across the Miles $20.00