Below is an alphabetized list of diamond inclusions, along with descriptions and photos.
Bearding is visible at this diamond's girdle
Fuzzy, hair-like lines that extend from the girdle into the diamond that occur during the cutting process.
These low quality baguette diamonds have visible cavities
A large opening in the surface of the diamond. Cavities are usually created during the polishing process when an internal inclusion is breached, and is dislodged from the diamond, leaving an opening at the surface
A small, shallow opening on the surface of the diamond due to wear and tear. Usually at the girdle, or at facet junctions.
Many microscopic inclusions form this cloud inside a natural diamond
A cluster of pinpoints and/or crystals found very close to each other.
Crystal inclusion inside a natural diamond
A mineral crystal within the diamond. They can be black (carbon), colorless (diamond), red (garnet), green (peridot), etc.
Large feather inclusion inside a natural diamond
A crack, or fracture, within the diamond.
Graining in a diamond visible under magnification
Caused by irregular crystal growth. Internal graining can appear milky or hazy.
Indented natural on the girdle of a diamond
An area of the rough diamond's surface that is recessed beneath the surface of a polished diamond, usually at the girdle. It may appear to be a cavity, but when magnified, you'll notice angular growth marks.
A long, thin, needle-shaped inclusion that is usually white or transparent.
Very tiny white or black crystal inclusions.
Twinning wisps inside a trapezoid step cut diamond
A series of pinpoints, feathers, clouds or crystals that form a chaotic pattern. Due to a "stop and start" of growth during the formation of the diamond, sometimes thousands of years later.
unique inclusions gallery
All photos courtesy of Scott Papper, GIA GG, AJP, CMA (NAJA)