The outermost edge of a diamond – between the crown (top section), and the pavilion (the base section). Graded according to thickness, Medium is the optimum measure, between Extremely Thin and Extremely Thick. Diamond girdles come in three styles; bruted – the most traditional – a rough finished edge; polished – a single facet which runs circular around the diamond; and faceted, the most common modern finish, where small facets are cut all around the girdle. The style of girdle does not affect its grading.
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