Hello, My fiancé gifted me a ring based on the GIA certificate. It's a 0.83ct- D-vs1-3ex-none round diamond. The proportions of the diamond are at the limit of the specified ranges. Table: 57% Total depth: 62.9% 
Girdle: medium-slightly thick 4.0% Crown angle: 36° Pavillion angle: 40.6°
Also, in brightly lit places like a store, the diamond look like gray glass. I'd like to know if this diamond my fiancé bought is bad.
Girdle: medium-slightly thick 4.0% Crown angle: 36° Pavillion angle: 40.6°Also, in brightly lit places like a store, the diamond look like gray glass. I'd like to know if this diamond my fiancé bought is bad.
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