A COMPREHENSIVE GUIDE TO

diamond clarity

what is diamond clarity?

Diamond clarity refers to the measure of a diamond's internal and external imperfections, known as inclusions (internal flaws) and blemishes (surface flaws). It indicates how free the diamond is from these imperfections, which can affect its appearance, brilliance, and value.

the diamond clarity scale

Clarity is graded using the GIA Diamond Clarity Scale, ranging from Flawless (FL), with no visible imperfections under 10x magnification, to Included (I1, I2, I3), where imperfections are visible to the naked eye.

flawless

FL: No inclusions or blemishes visible under 10x magnification.

internally flawless

IF: No inclusions visible under 10x magnification; only insignificant blemishes on the surface.

very, very slightly included

VVS1 and VVS2: Inclusions are difficult to see under 10x magnification.

very slightly included

VS1 and VS2: Minor inclusions that are visible under 10x magnification but are not easily seen.

slightly included

SI1 and SI2: Inclusions that are noticeable under 10x magnification may be visible to the naked eye.

included

I1, I2, and I3: Inclusions that are visible to the naked eye, affecting transparency and brilliance.

how is clarity grade determined?

Gemologists evaluate several factors when grading diamond clarity:

  • Size: The dimensions of the inclusion or blemish
  • Number: The quantity of inclusions or blemishes present
  • Position: The location of the inclusion or blemish within the diamond
  • Nature: The type or characteristics of the inclusion or blemish
  • Relief: How the inclusion or blemish affects the diamond's transparency and brilliance

what is an inclusion?

Inclusions are internal characteristics within a diamond.

Common inclusions include:

  • Cavity: A void on the surface or inside the diamond
  • Cloud: A group of tiny crystals that can affect transparency
  • Crystal: A mineral crystal inside the diamond
  • Feather: A small crack or fracture inside the diamond
  • Graining: Irregularities in crystal structure
  • Needle: A long, thin crystal resembling a needle
  • Knot: An included crystal that reaches the surface

Pinpoint: Tiny crystals that look like dots.

what is a blemish?

Blemishes are external characteristics on the diamond's surface.

Common blemishes include:

  • Abrasion: Scratches or nicks on the diamond's surface
  • Chip: A small, shallow opening on the diamond's surface
  • Natural: Rough surface left on a diamond from its original crystal shape
  • Nick: A small, shallow notch on the diamond's surface
  • Pit: A tiny opening on the diamond's surface
  • Rough Girdle: An unpolished or rough diamond edge
  • Scratch: A visible line on the diamond's surface