Lauriane Pinsault：2022年全球祖母绿与红宝石供应：市场数据分析报告（英文版）

Before drawing conclusions from the data presented herein, readers are alerted to the significant challenges related to obtaining data and information about coloured gemstone supply and the downstream market. The major challenge when trying to assess worldwide coloured gemstone production is the lack of available data. The vast majority of coloured gemstones are extracted by artisanal mining, both formal and informal, for which no reporting standards – and scant data – exist. Private large-sc