black,yellow,red,white,multicolored river stones with high polishing.
See MoreThe main chemical components are silicon dioxide, followed by a small amount of iron oxide and trace elements such as...
See MoreThe main chemical components are silicon dioxide, followed by a small amount of iron oxide and trace elements such as...
See MoreThe main chemical components are silicon dioxide, followed by a small amount of iron oxide and trace elements such as...
See MoreThe main chemical components are silicon dioxide, followed by a small amount of iron oxide and trace elements such as...
See MoreThe main chemical components are silicon dioxide, followed by a small amount of iron oxide and trace elements such as...
See MoreThe keel stone is an animal fossil. The cause is that after the animal is buried in the soil, the organic matter in the bone...
See MoreMelaleuca stone: hard and dense, with a thin weathered layer on the outside, relatively soft; the texture on the stone is...
See MoreWood fossils are tree fossils in which the wood parts are exchanged with SiO2 (silica) in groundwater after the trees have...
See MoreThe main chemical components are silicon dioxide, followed by a small amount of iron oxide and trace elements such as...
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