We offer models of crystals. The models in the shop are available in a variety of materials, but they are designed for Strong & Flexible Plastic. All models have a minimum size of 5 centimeters in at least one direction. The plastic models are crystallographically correct, with sharp edges and flat faces. They are well suited for educational purposes. Are you looking for other minerals or crystals, or different sizes and materials? No problem, contact me at www.smorf.nl/contact.php.