A nick is a small notch on a facet junction, with no clear depth at 10x. It is usually on the girdle edge or at the culet.
In more detail
It is a blemish. The polish grader looks for nicks at 10x, with pits, polish lines and scratches.
On a grading report
A blemish; it can count in the polish grade.
Related terms
- Chip: A chip is a shallow opening in the surface, caused by damage. It is usually at the girdle edge, a facet junction or the culet.
- Abrasion: An abrasion is a row of tiny nicks along the facet junctions of a cut diamond. It makes the edges look white or fuzzy.
- Polish: Polish is the grade for the smoothness of the facet surfaces, from Excellent to Poor. The grader looks at 10x for pits, nicks, polish lines, scratches, burn marks and rough patches.
- Blemish: A blemish is a clarity characteristic confined to the surface of a diamond.