70g Cream White Transparent CALCITE Crystal Iceland Spar

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70g Cream White Transparent CALCITE Crystal Iceland Spar **specification** 120613 1.5 x 1.3 x 1.0 inch 70g Hunan province * China Calcite is a chemical or biochemical calcium carbonate corresponding to the formula CaCO3 and is one of the most widely distributed minerals on the Earth's surface. It is a common constituent of sedimentary rocks, limestone in particular. It is also the primary mineral in metamorphic marble. It also occurs as a vein mineral in deposits from hot springs, and also occurs in caverns as stalactites and stalagmites.Calcite crystals are hexagonal-rhombohedral, though actual calcite rhombohedrons are rare as natural crystals. However, they show a remarkable variety of habit including acute to obtuse rhombohedrons, tabular forms, prisms, or various scalenohedrons. It may occur as fibrous, granular, lamellar, or compact. **Customer service** We use global airmail to ship your parcel.It is a long distance,thanks for your patience of waiting. Return and exchange is only accepted within 14 days after receiving items. All return items must include original packaging and are in resalable condition. Shipping cost is NOT refundable.Please e-mail us for concerns of return or exchange. If your item is damaged on arrival,please be sure to contact us before taking other action!we will resolve the issue at your convenience read more