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Lower girdle facets
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
The facets on the pavilion of a round brilliant just below the girdle.
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Master diamonds, английский
Sets of rough or polished diamonds of known body colour to which other diamonds are compared to judge their colour grade. master diamonds typically range from colourless through gradually deepening tints of yellow. also called colour sample or master colour set, master set or masterstones.
Length - to - width ratio, английский
A comparison of the length and width of the girdle outline on fancy shaped diamonds. the ratio is found by dividing the length of the diamond by the width. the width is always stated as 1.
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