A tiny mark on the surface of the diamond with minute root-like feathers that can affect clarity grade.
An angular opening in the surface of the diamond that might be impossible to see with the naked eye in higher clarity grades.
Nick or Chip
Generally minor damage to the stone’s surface that might have resulted from the cutting process and may be impossible to see with the naked eye in higher clarity grades.
A cluster of tiny pinpoints—also referred to as a micro-cloud—difficult to detect under 10x magnification and rarely, slightly eye-visible. May slightly impact transparency in lower clarity grades when the cloud is located throughout stone..
A tiny bit of small crystals, minerals, or other diamonds found within a diamond that varies in size, shape and color.
One or more additional facets often located near that girdle that don’t fit with the diamond’s facet pattern or symmetry. Often added to remove a blemish or near-surface inclusion.
A common term for fractures, cleavage or fissures that extend to the diamond’s surface and are often difficult to see in higher clarity grades.
An unpolished indented edge or area from the original uncut diamond that is not removed (for weight retention) and dips below the surface of the finished, polished diamond.
A transparent crystal that extends to the surface of a finished, polished diamond.
Laser Drill Hole
A pinpoint hole on the surface of a diamond that leads to a microscopic tunnel drilled and injected with a chemical to lighten an inclusion. Blue Nile does not carry diamonds with laser drill holes.
Part of the original uncut diamond’s surface left unpolished on the finished diamond for weight retention, typically found near the girdle and nearly always undetectable to the naked eye.
A fine, elongated inclusion that looks like a tiny rod under 10x magnification and are generally more subtle than crystals or feathers.
Miniscule crystals in the diamond that are difficult to find and look like tiny specks under 10x magnification.
Pinpoints, clouds, or crystals formed during a diamond’s growth that appear as subtle ripples or wispy lines.