Crystal This listing is for one septarian slab from utah you choose (he-tbl1-26) Variants: 1. 5" x 4.5" x 0.5" 325g 2. 4.5" x 4.5" x 0.5" 295g 3. 5" x 5" x 0.5" 370g 4. 5.75" x 5" x 0.5" 500g 5. 5" x 5.5" x 0.5" 305g 6. 5.5" x 6" x 0.5" 530g 7. 5.5" x 5.25" x 0.5" 435g 8. 6" x 5.5" x 0.5" 510g 9. 6" x 7" x 0.5" 570g 10. 5.5" x 5.5" x 0.5" 535g 11. 7" x 5.5" x 0.5" 425g 12. 5.5" x 5" x 0.5" 415g 13. 6" x 5.5" x 0.5" 480g Septarian (also known as septarian nodule or dragon stone) is a type of sedimentary rock that is composed of a combination of minerals, including calcite, aragonite, and limestone. It is characterized by its distinctive yellow-brown color and unique pattern of angular cracks or fissures that divide the rock into small, angular fragments.