Gemini - Create-a-Card Metal Die - Heart Patchwork. The Gemini Create-a-Card Metal Die, Heart Patchwork is a gorgeous thin metal die which will allow you to create beautiful and unique patchwork style designs on your projects. They have been designed to work with most card sizes including DL, A5, A6 and 4" x 4", Decorate your squares using the accessory dies provided. Compatible with most Die-Cutting Machines.