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    日期:2019-12-01 Keywords: Colored gemologyDate : 2019-12-01
  • spContent = A passionate ruby, a deep and stable sapphire, representing emerald and hope, the mysterious opal, which is your favorite? Come on, listen to a professional lecture and make a decision! —— "Colourful Gemology" Course Team ...
    Keywords: Date: 2019-11-30
  • Yi Cai Shi Guang, only makes preserved colored gemstones. The brand was founded in 2007. With rich mineral resources, deep jewelry construction technology and natural colored gemstones ...