Clarity is the absence of internal flaws that can be seen with a magnification of 10.Carat is the weight of the stone, not how big it is. The type of flaw and where it occurs in the stone affects its […]
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The four characteristics that determine value in a colored
Miércoles, noviembre 25, 2020Tags: Stone Machinery Manufacturers
Publicado en China stone cutting machine company, Stone CNC working center suppliers| No hay comentarios 
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