Lizard skin is a wavy or bumpy area on the surface of a polished diamond.
In more detail
It is a blemish, so it lies on the surface only. GIA's polish grade covers surface condition, so lizard skin can count there.
On a grading report
A blemish; it can count in the polish grade.
Related terms
- Polish lines: Polish lines are fine parallel grooves and ridges left by polishing. They can occur on any facet but don't cross facet junctions, and they look transparent or white.
- 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.