Diamond Education

Relax, most People don't know much about Diamond Quality. It's not that Hard and We are Here for You :)

Diamond Cut

A Diamond sparkles because of its cut. When the proportions, polish, and symmetry are perfect, light dances inside the Diamond, creating incredible brilliance. If the cut is off, the Diamond looks flat and lifeless.

NiZi, IGI and GIA grades round Diamonds on Cut, Polish, and Symmetry (3X cut, the best one in Round Diamonds).

Fancy shapes (any Diamond which is not Round, is called Fancy) are graded on Polish and Symmetry only (2X cut, the best one in Fancy).

Here’s a quick guide to the Diamond Cut Scale:

● Excellent: Highly reflective and proportionately cut.

● Very Good: Very reflective with well-cut facets.

● Good: Most light is reflected back, but proportions are less ideal.

● Fair: Light starts to escape from the bottom or sides, reducing shine.

● Poor: Noticeably dull and less reflective.

At NiZi, only Excellent and Very Good Cut Diamonds make the cut. The truth is simple: Cut beats Size, every time.

Diamond Color

Diamond color really means how colorless the Diamond is. The clearer it is, the more valuable it becomes. Since many Diamonds naturally have a slight tint, IGI uses a scale from D (colorless) to Z (yellow tint) to grade them.

Here’s a breakdown of the Diamond Color Scale:

Colour

Description

D	Absolutely colorless. Extremely rare and valuable.

E-F	Colorless. Very slight traces of color detectable by an expert gemologist.

G-H	Near colorless. Slight color visible when compared to higher grades, but excellent value.

I-J	Noticeable color. Great value, especially for yellow gold settings.

K-Z	Increasingly noticeable color, ranging from faint to more obvious yellow.

At NiZi, only Diamonds that are in the D-F range are able pass our rigorous quality standards. We do this to make sure that the Diamonds you are wearing shine as bright as You.

Diamond Clarity

Clarity refers to the natural imperfections within a Diamond, known as inclusions (internal) and blemishes (external).

These tiny imperfections can affect how light passes through the Diamond, impacting its brilliance. However, many of these flaws are microscopic and don’t affect the Diamond’s beauty to the naked eye.

Clarity grades range from Flawless (FL) to Included (I):

● FL (Flawless): No inclusions or blemishes visible under 10x magnification. Extremely rare.

● IF (Internally Flawless): No internal inclusions, only minor surface blemishes under 10x magnification.

● VVS1/VVS2 (Very Very Slightly Included): Inclusions are very difficult to detect even under 10x magnification.

● VS1/VS2 (Very Slightly Included): Minor inclusions are detectable under 10x magnification but not visible to the naked eye.

● SI1/SI2 (Slightly Included): inclusions are noticeable under 10x magnification and may be visible to the naked eye.

● I1/I2/I3 (Included): Inclusions are obvious and can affect transparency and brilliance.

We don’t use diamonds below the VS clarity because we are NiZi and that means we only want the Best for YOU.

Diamond Carat

Carat weight measures how heavy a Diamond is. One carat equals 0.2 grams, about the weight of a paperclip. Each carat has 100 cents, and each cent has 10 dhoras, which are so tiny they’re smaller than dust. Polishing Diamonds this small takes Serious Talent, and our Kaarigars are the best at it.

Carat is about weight, not just size. Two Diamonds with the same carat can look different depending on the cut.

Carat weight affects price quickly because bigger Diamonds are rarer.

For round Diamonds:

• 1 carat is about 6.4 mm

• 2 carats is about 8.1 mm