Diamond Education

Understanding Diamond Clarity

No diamond is perfectly pure. Clarity measures how visible those natural characteristics are — and how much they affect the stone's beauty and value.

What Clarity Actually Means

As diamonds form deep within the earth under intense heat and pressure, most develop tiny internal characteristics called inclusions, and surface characteristics called blemishes. Clarity grading evaluates the number, size, position, and visibility of these features under 10x magnification.

Most inclusions are microscopic and completely invisible to the naked eye — which is why a diamond doesn't need to be flawless to look flawless on your hand.

The Clarity Scale

Diamonds are graded on an 11-point scale, from completely flawless to visibly included:

FL / IF
Flawless / Internally Flawless
VVS1 / VVS2
Very, Very Slightly Included
VS1 / VS2
Very Slightly Included
SI1 / SI2
Slightly Included
I1 / I2 / I3
Included — visible to the naked eye

Why Charlie Recommends VS & Above

For most shapes, VS1–VS2 clarity diamonds offer the best balance of beauty and value — inclusions are invisible to the naked eye, but the price is meaningfully lower than flawless stones. Charlie personally reviews every diamond's clarity characteristics with you before you buy, so you know exactly what you're getting.

Want the Full Technical Detail?

GIA and IGI both publish detailed, official guides to diamond clarity grading directly on their own sites.