18K four prong diamond tennis necklace

Good Cut: One grade below Very good cut and 2 grades below excellent cut diamonds. Good cut diamonds provide great value for money.

Excellent Cut: The highest grade given to a diamond. Excellent cut diamonds are perfectly crafted to reflect the best features of a diamond.

The highest colour grade given to a polished diamond. D colour diamonds are the highest graded on the 'colourless' section of the scale, and lack any sort of hue.

The second grade of the 'colourless' section of the colour scale. E colour diamonds have some hue which is extremely difficult to detect even by a trained gemmologist.

The final grade of the colourless section, f colour diamonds represent diamonds with a slight hue that is difficult to detect by the untrained eye.

H colour diamonds are still part of the ‘near colourless’ category, colour is only visible in bright light conditions or when seen with a sophisticated eye glass.

I colour diamonds only show colour under bright lighting conditions or when examined closely.

J colour: The last of the "near-colourless" grades, colour may be slightly detectable to the unaided eye, particularly in fancy shapes or diamonds over 1-carat.

K colour: The first of the "faint" colour grades, meaning colour may be detectable to the naked eye. K-colour diamonds can offer great value.

No internal inclusions or blemishes, flawless (F) or internally flawless (IF) diamonds are perfectly clear without any noticeable blemishes. Any outside blemishes, although very rare, are practically impossible to detect with the naked eye.

No internal inclusions or blemishes, flawless (F) or internally flawless (IF) diamonds are perfectly clear without any noticeable blemishes. Any outside blemishes, although very rare, are practically impossible to detect with the naked eye.

Very slightly included. Blemishes and inclusions are slightly easier to identify under a microscope, however practically impossible to identify by the naked eye.

Very very sightly included. blemishes or internal inclusions are minimal and extremely difficult to identify even by a trained gemmologist.

Very very sightly included. blemishes or internal inclusions are minimal and extremely difficult to identify even by a trained gemmologist.

Slightly included. Blemishes and inclusions become somewhat noticeable especially under a microscope.

Slightly included. Blemishes and inclusions become somewhat noticeable especially under a microscope.