Daar is vyf soorte ornamentele klippe in juweliersware en jade: modellering van klippe, patroon klippe, minerale kristalle, fossiele, en spesiale klippe. Laasgenoemde drie is relatief klein kategorieë. Die redakteur van Baolong sal vir jou 'n inleiding gee. Mineral crystal Minerals are natural elements or compounds formed by geological processes. They have a relatively definite chemical [...]
