All diamonds acts like a prism whereby light can be divided into a spectrum of colours.
colourless diamond, allows more light to pass through it than a coloured diamond, these colourless diamonds reflect the light as colourful flashes called ‘fire’. The less colour in a diamond the more colourful the fire and hence the better the diamond grade.
Diamond Colour
A diamond acts like a prism whereby light can be divided into a spectrum of colours.
A colourless diamond, allows more light to pass through it than a coloured diamond, these colourless diamonds reflect the light as colourful flashes called ‘fire’.
The less colour in a diamond the more colourful the fire and hence the better the diamond grade.
Colour in a diamond acts as a filter and reduces the range of colour exuded.
The perfect diamond is actually colourless.
The less colour (yellow) a diamond permeates the more rare and valuable it actually is.
A letter grade is given to a diamond to describe the subtle tones of colour in the stone.
D is perfectly colourless and therefore the most rare and expensive.
As you progress from D to Z on the alphabet colour scale, the level of colour increases with traces of a yellowish or brownish colour.
Vibrant colours such as pink, red, blue and green are constantly being discovered, but due to their rarity are incredibly expensive.
These colours do not follow the normal colour scale and are categorised separately.
At GoldeNet Australia you will only find the finest diamonds, therefore we do not offer diamonds that have been graded below M.
Which Colour Grade Should I Choose? Diamonds graded D through F are naturally the most valuable and desirable because of their rarity. The rarity and value of these diamonds are reflected in their price.
This does not mean that diamonds graded below F are not considered to be very attractive.
Diamonds graded G through I show virtually no colour visible to the untrained eye.
Diamonds graded J through M show an extremely faint trace of yellow, however this faint hint of colour can be minimised by the careful selection of the right jewellery setting on which to mount your diamond.
D, E, F = For the purest diamond, diamonds graded D-F are superb diamonds and are extremely expensive.
G, H, I, J = For excellent value in a diamond with no noticeable colour to the untrained eye.
Nearly colourless diamonds with noticeable colour when compared to higher grade diamonds. These are high quality and are excellent value.
K, L, M = Faint yellow diamonds.
N, O, P, Q, R = Very light yellow diamonds.
GoldeNet Australia does not offer these diamonds.
S, T, U, V, W, X, Y, Z = Light yellow diamonds. GoldeNet Australia does not offer these diamonds.
Diamond Cut
The cut of a diamond is one of the most important diamond characteristic as it provides the diamond with its unique sparkle and brilliance as the cut allows the maximum amount of light to enter and leave the diamond.
Of the Four Cs, the cut is the only value factor that is a result of human skill.
It refers to the angles and proportion of a diamond, as well as its polish and precision of faceting. Often the cut of a diamond is mistakenly referred to as the shape (round, pear, oval, etc.) of the stone.
Well-cut diamonds can reflect light like a mirror from one facet to another and disperse and reflect this light through the top of the stone.
A well-cut diamond will be symmetrically round, proper depth and width and have uniformity of the facets.
These features will result in optimal radiance.
On a classic round brilliant-cut diamond, for example, 57 or 58 facets must be precisely aligned so light will enter the diamond and reflect back through the large top facet, or table of the diamond. Diamonds that are cut either too deep or too shallow can lose light through the sides and bottom and will be less brilliant, and ultimately of less value.
The universal cut grading scale, as defined by the American Gemologist Society Laboratories (AGSL), is outlined below. Currently, only round diamonds are graded.
GoldeNet Australia does not carry any diamonds below the cut grade of ‘Good’.
IDEAL CUT: Represents roughly the top 3% of diamond quality based on cut.
Perfectly proportioned with the highest grade of polish and symmetry.
This grade of diamond reflects virtually all light that enters it.
They are the most brilliant, rare and expensive diamonds.
EXCELLENT CUT: Represents roughly the top 8% of diamond quality based on cut.
Proportioned to fit strict requirements for table and depth percentage.
This grade of diamond reflects almost all light but less than the ideal cut.
They are still quite rare and very expensive.
VERY GOOD CUT: Represents roughly the top 15% of diamond quality based on cut.
Proportioned to reflect much of the light that enters.
This is a high quality and moderately priced diamond.
GOOD CUT: Represents roughly the top 25% of diamond quality based on cut.
Proportioned to reflect most light that enters.
These are considerable value, quality diamonds.
To find out more and compare prices, go to: http://www.getprice.com.au/Clothing_&_Acces_Jewellery_Diamonds_GPcn_425
