ALEXANDRITE AND DIAMOND RING Octagonal step-cut alexandrite of 2.77 carats, circular and square-shaped diamonds, platinum, ring size 6 Gübelin, 2020, report no. 20051072: 2.77 carats, Brazil, no indications of treatment, displays a strong colour-change US$20,000-30,000
ALEXANDRITE AND DIAMOND RING Octagonal step-cut alexandrite of 2.77 carats, circular and square-shaped diamonds, platinum, ring size 6 Gübelin, 2020, report no. 20051072: 2.77 carats, Brazil, no indications of treatment, displays a strong colour-change US$20,000-30,000
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