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Emerald crystals from Colombia, Afghanistan, and Zambia
产自哥伦比亚、阿富汗和赞比亚的祖母绿的光致发光光谱

比较了来自三个国家的 48 件祖母绿样本的光致发光光谱,用于评估原产地测定技术的可用性。

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Figure 9. The parcel of rough spinel on the left, reportedly from Tajikistan, contains pieces weighing up to 48.5 g. The seven faceted spinels on the right (9.04–28.16 ct) were fashioned from some of this rough.
产自塔吉克斯坦的紫粉红色尖晶石:切磨前后

产自塔吉克斯坦的紫粉红色尖晶石:切磨前后

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