Japan is very strict on imported products to Japanese customers, the recent number of calcium fluoride content up to more than 95% pure green fluorite crystal. Such fluorite production is relatively very small plant in the mining process, specially selected products. 
 Green pure crystalline calcium fluoride content of 95% fluorite is typically used in crafts and fine research in the field. Calcium fluoride above content has been basically do not contain quartz sand, calcite and other substances. Welcome into the understanding of my factory fluorite. 
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