Of Trilobite - 66x36 mm max. Size of matrix - 121x86mm max. All photos are enlarged for you to see more details, please check the descriptions for actual dimensions. For an idea of the real size I take pictures on my hands. So I try to combine all your orders into one package. When you win multiple auctions, I add bonus. If you are not happy with the item, you can return it in original condition within 14 days from the date received. Your satisfaction is the most important thing I pursue. If you have any questions/complaints please feel free to contact me before leave feedback.