Septarian Nodule Pair Size:3.45" x 3.12"87mm x 79mmWeight:20.15 oz571 gramsLocation:Morocco 3.4" polished Septarian nodule pair from Morocco. This is also known as Dragon Stone. This nodule has been cut in half and polished to show off the Septarian interior. The two sides of the pair measure 87mm and 79mm at their widest points. Septarian forms from decomposing sea shells that had an attraction for the surrounding sediment, form...ing mud balls under the sea. Tide and wave action rolled these balls around, creating sedimentary balls of a larger size. As the ocean receded, the balls were left to dry and crack, allowing Calcite crystals to form within them. A thin wall of Calcite transformed into Aragonite, dividing the shale exteriors from the Calcite crystals. The name Septarian is derived from these dividing walls (septum in Latin.) This nodule was then cut and polished in Morocco. Pair weighs over 1 1/4 lb. A great Septarian nodule for display, collection and study. Save shipping costs by combiningauction items for a period of up to a couple weeks. Shipping cost iscalculated based upon actual shipping and packaging costs depending on deliveryaddress and item weight and size with our discounted postal rates. We sendout combined shipping invoices after all auctions have ended for the day or youcan request one at any time. If for any reason you are unhappy with yourpurchase, you may return your item within 14 days of delivery for a fullpurchase price refund, shipping costs are non-refundable. DH Minerals is backed by 100percent positive feedback with over 10 years experience. Feelfree to send us a message with any questions you mayhave. Add dh-minerals to your Favorites on eBay as we'llbe listing many new quality mineral and fossil specimens and carvings weeklyyear-round!