Loose Diamond Definitions: K

Knife-edge Girdle-A girdle of a diamond that is so thin that it can be likened to the edge of a sharp knife. Since such a girdle is easily chipped, an ideal girdle has an appreciable thickness.

Knot-An included diamond crystal that is encountered at the surface of a stone during the polishing operation, and that stands out as a small, raised surface on the finished stone.

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