
Topaz Journey
Honey yellow. Fiery orange. Cyclamen pink. Icy blue. In warm or cool tones, topaz is a lustrous and brilliant gem



Ulrika F.S. D’Haenens- Johansson
Ulrika F.S. D’Haenens-Johansson(乌尔丽卡·F.S.·德哈恩斯-约翰森)运用光学和 EPR 光谱仪研究天然钻石、经处理钻石和实验室培育钻石材料的缺陷物理性质
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