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Welcome to OG Fine Jewelry!

Diamond Education

The 4 C’S Diamonds


While we often mistake a diamond’s cut as its shape (pear, oval, round, heart or marquise being common diamond shapes), the cut gives it the unique ability to interact with light. The workmanship involved in cutting loose diamonds decides how beautiful and valuable they will be. While a precisely cut diamond will appear more luminous, a poorly cut diamond can appear dark and lackluster. Simply put, a diamond’s cut unleashes its light. To understand how well the light will reflect back to the viewer, you need to look at the diamond from the pavilion angle. If it’s too shallow, then it will cause less light to return. If it’s too deep, again it will cause a loss of light. But an ideal cut diamond will allow light to pass within it and reflect it back to the viewer.

Cut Grades of Diamonds


Very Good




Color Grades of Diamonds

While most diamonds look white, there are in fact many subtle shades. The closer the diamond is to being colorless, the more valuable it is. Pure diamonds, which are the rarest and most valuable, are perfectly transparent and colorless.

Globally, diamonds are graded on a color scale from D-Z and segregated into five categories:

Cut Grades of Diamonds


Near Colorless

Faint Yellow

Very Light Yellow

Light Yellow


All diamonds contain small imperfections inside them (called inclusions) or on the surface (called blemishes). Clarity refers to the degree of imperfections present in the diamond. The ones with more imperfections have lesser brilliance and vice versa.

Diamonds are graded for clarity using a 11 point scale created by the GIA which considers the number, size, color, reflectivity, and position of every flaw visible under 10x magnification.

Included I1/I2

Slightly Included SI1/SI2

Very Slightly Included VS1/VS2

Very Very Slightly Included VVS1/VVS2

Internally Flawless IF

Flawless FL


Carat is a term that refers to the weight of a diamond. In the United States, most of the diamonds used in the jewelry are 1 carat or lesser. The carat weight impacts the cost of the jewelry. When investing in diamond engagement ring, 1 to 2 carats are the preferable as they are of higher quality and give the desirable brilliance.


Diamonds come in many different shapes. Each diamond possesses its own unique features thats set it apart from others. Each of these may cause the diamond to reflect light in a different ways and change how you view it. The shape is a preference which best fits you.