Diamond Education


Quasar Diamond Buying Guide

We have put together a Diamond Buying Guide which is available at all leading New Zealand jewellers or you can view or download from our website, links to the right.

Quasar Buying Guide
Quasar Diamond Buying Guide
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The Four C's

The Quality and Value of a Diamond is determined by the 4 C's. Diamonds with the highest 4C ratios are the rarest and therefore the most valuable.

The Four C's are:

  • Cut
  • Colour
  • Clarity
  • Carat Weight

Cut

The Cut Grade measures how the individual proportions combine to effect the beauty of a diamond. Diamonds with a high cut grade will have a high degree of brightness, fire (rainbow colours) and scintillation (sparkle). High cut grades include "Excellent" and "Very Good" (Quasar Diamonds range) , midrange includes "Good", and low end includes "Fair" and "Poor".

Cut Grades

Colour

Quasar Diamonds are graded using the G.I.A and HRD colour grading scale (D-Z). Most diamonds are colourless to slightly yellow. The highest grade is "D" or colourless exceptional white +) and extends to "Z" or light yellow.

Colour

Clarity

All diamonds contain imperfections. The very best, and rarest, clarity is Flawless (FL). Because many inclusions are not visible to the naked eye, diamonds are graded under 10x magnification.

Clarity

Carat Weight

Diamond weight is measured in carats and 100pts = 1 ct..

Carat Weight

Shapes

Diamonds can be cut in various shapes. Fancy shape is the term given to non round shapes. Rounds are by far the most popular shape. Princess cut is the most popular fancy shape.

Round
Princess
Emerald
Round
Princess
Emerald
Oval
Asscher
Radiant Square
Oval
Asscher
Radiant Square
Marquise
Pear
Radiant Rectangular
Marquise
Pear
Radiant Rectangular