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Figure 30. The superior quality of Diavik’s production will ensure profitability through 2024. Photo courtesy of Rio Tinto Diamonds.
Figure 29. UV-Vis-NIR absorption spectra (offset for clarity) showed four features affecting the Diavik diamonds’ color: absorptions due to cape bands, vacancy clusters, the 550 nm broad band, and hydrogen-related defects.
Figure 28. DiamondView imaging showed mostly uniform blue fluorescence (A). Seven “hopper”-form diamonds showed predominantly green fluorescence (B), and a few crystals showed green luminescence from H3 optical defects in linear patterns (C). Both fibrous coatings and interiors of coated diamonds (where parts of the coating are missing) fluoresced blue (D). Images by Kyaw Soe Moe.
Figure 27. Dark- and light-colored fibrous diamond coatings were observed on a few of the crystals. Photos by Jian Xin (Jae) Liao.
Figure 26. The morphology of the Diavik diamonds was dominated by octahedral forms that displayed varying amounts of resorption. Cube, twinned, and irregular forms were also present. Photos by Jian Xin (Jae) Liao.
