Goldsmiths Gallery

Diamond Information

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

The Four C's of Diamonds are:

• Cut • Colour • Clarity • Carat Weight

Diamond 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 Irainbow colours,) and scintillation (sparkle). High cut grades include "Excellenr and 'Very Good", midrange includes "Good", and the low end includes "Fair" and "Poor".

Excellent + / Very Good

These diamonds will have a high degree of brilliance. fire, and scintillation.
(Quasar Diamond Range)

Good

Good Cut Diamond

This grade will generally be a bit darker or lacking scintillastion.

Fair

Fair Cut Diamond

Diamonds in this category lack brightness, fire and scintillation.

Poor

Poor Cut Diamond

Diamonds in this category show very little brightness, fire and scintillation.

Back to topDiamond Colour

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

Diamond Colours

Back to topDiamond Clarity

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

Diamond Clarity

Back to topDiamond Carat Weight

Diamond weight is measured in carats.
One carat = 0.2grams and one carat = 100 points.

Carat Weights

Back to topDiamond Shapes

Diamond 'Cut' Shapes Round cut diamond Princess cut diamond Emerald cut diamond Cushion cut diamond Heart cut diamond Pear cut diamond Marquise cut diamond Oval cut diamond Radiant cut diamond Asscher cut diamond 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.

Back to topWhat is a diamond?

Round Diamond DetailsDiamond is a naturally occuring form of carbon crystallised at extremely high temperature and pressure.

In nature, diamonds were formed approximately 200 kilometres below the earth's surface approximately 3500 million years ago just after the formation of the earth.

Diamond is by far the hardest of all known natural substances.

** The information on this page is from Quasar Diamonds brochures, The Goldsmith's Gallery Ltd is the local agent for Quasar Diamonds.