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Why aren’t all pink diamonds equal?

Image Gallery (11 Images)   



Figure 1. Brown and pink diamond crystals from the Argyle mine. Image courtesy: Rio Tinto Diamonds

Figure 2. Tiara set with 175 Argyle pink diamonds, offered for AU$2.25 million. Image courtesy: Linneys Jewellers

Figure 3. Argyle pink diamonds in tiara show strong blue fluorescence. Image courtesy: Sarah Edwards, during NCJV meeting

Figure 4. PDC diamonds pink and blue, SDTC brown CVD-grown diamonds. Image courtesy: GRS, Hong Kong

Ring with 2.74-carat light pink si1. Image courtesy: HRA Group

Figure 5. Synthetics show orangey pink, Argyle pinks show blue. Image courtesy: GRS, Hong Kong

Figure 6. CVD-grown PDC diamonds have specific blackish ‘feathers’. Image courtesy: GRS, Hong Kong

Figure 7. Columnar pattern indicates the diamond is grown by deposition. Image courtesy: GRS, Hong Kong

Figure 8. Pink CVD-grown diamonds. Image courtesy: SDTC

Figure 9. Photoluminescence and visible spectra instrument for diamonds at three GRS labs. Image courtesy: GRS, Hong Kong



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