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Jewelry Books

Diamond Ring Buying Guide by Renee Newman
Consumer-oriented book filled with useful information, drawings & pictures for 1st time diamond buyer.

Photo Masters of Diamond Grading by Gary Roskin
Photo Masters is a compilation of 244 extraordinary photomicrographs, suitable for students or experienced diamond graders.

Blood Diamonds

Blood Diamonds cost torture & death for Sierra Leone residents. Conflict Diamonds finance civil wars & terrorists, including al Qaeda.

Antique Price Guide

By Judith Miller, author of more than 80 books on antiques, including "How to Make Money Out of Antiques."

The 5C's

Carat - Color - Clarity - Cut - Cost



The clarity of a diamond refers to how clear, or "clean" the diamond is. The more "clean" the diamond, the higher the price. Most diamonds have "imperfections" in them. The clarity scale is a measure of the severity of those imperfections or "inclusions" as it is known in the trade.

For example, a deep break in a diamond which is not that visible when you look at the stone face-up, could sometimes have a greater impact on the clarity of a stone, than a small black crystal which you can see very clearly face-up.

The following is the GIA Diamond clarity-scale:


These stones have no imperfections inside or on the outside of the stone under the magnification of a loupe of 10 power.

IF-Internally Flawless

These stones have no inclusions under a loupe with a 10 power magnification.

VVS1,VVS2-Very Very Slightly Imperfect

These stones have very small inclusions which are very  difficult to see under a loupe with a 10 power magnification.

VS1,VS2-Very Slightly Imperfect

These stones have small inclusions which are slightly difficult to difficult to see under a loupe with a 10 power magnification.

SI1,SI2-Slightly Imperfect

These stones have inclusions which are fairly easy to see under a loupe with a 10 power magnification, or visible to the naked eye.


These stones have inclusions which range from eye visible to very easily seen to the naked eye.














Internally Flawless

Very Very Slightly Imperfect

Very Slightly Imperfect

Slightly Imperfect




Outside of the GIA Diamond clarity scale is a grade you may have seen called SI3. The Rap Sheet, which is a Trade Publication, honors the SI3 grade which is given out by EGL, the European Gemological Laboratory. It is described as a split between the SI2 and I1 clarity grade.

How much does "clarity" affect cost?

The effect of all the different properties of Diamond on Cost is discussed in more detail in the Cost section. For clarity, let's take a typical Diamond for an example, and see what happens when we take it through different clarity grades.

Let's start with a 1.00 carat Diamond of G color and SI1 Clarity. If you move up to a VS1, you will pay approximately an extra $1000 per carat. Move up to VVS1, the increase will be approximately $700 per carat. Improve the clarity to IF and the increase will be approximately $700 per carat.

If you really want to *see* what the differences in the Clarity Grades look like under magnification, there is an excellent book by Gary Roskin called Photo Masters for Diamond Grading. It provides photographs and explanations of different Clarity Grades and the inclusions causing them. We also have a Gem Gallery with many great pictures of inclusions and clarity grades.

Further Reading:
Color vs. Clarity
Clarity Enhanced Diamonds
Diamond Crystal Inclusion
Really nice looking natural on diamond
Included Garnet Crystal in Diamond
Kite Shaped Natural on Diamond
One of the most unique inclusions in Diamond
Included Diamond Crystal in Diamond
Say hello to Laser Drill Holes
Novice viewing clarity of Diamond
Clarity Question

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