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A diamond’s cut refers to the way a diamond is cut to affect light return. Since diamonds do not absorb visible light, it is possible for them to be cut in such a way as to allow most, if not all, of the light that enters a diamonds to be reflected back through the top of the diamonds giving it life and fire. Other issues tham will affect a diamond’s cut are polish, symmetry, and proportions. When all of these things come together in the right amounts, we get diamonds with amazing visual qualities and that sparkle and dance in the light.
When determining cut several basic variables will contribute to the overall performance of the diamond. While having these numbers fall within certain ranges will help you determine how a diamond will perform in the light, nothing can replace looking at the diamond and seeing it. Some basic numbers to keep in mind looking at diamonds are these percentages from AGS and GIA, two of the more popular diamond grading labs.
|Table Diameter:||53 – 57%|
|Crown Angle:||34 – 35.5º|
|Pavilion Angle:||42.5 – 43.5º|
|Girdle Thickness:||Thin, Medium, Slightly Thick|
|Culet Size:||None, Pointed, Very Small, Small, or Medium|
|Table Diameter:||53 – 60%|
|Crown Angle:||34 – 35º|
|Girdle Thickness:||Medium – Slightly Thick|
|Culet Size:||None – Medium|
|Finish:||Very Good – Excellent|