Diamond Chart-2

The colour-grading system of The Cape Series assesses the colourlessness, or lack of colour  within diamonds. The diamond colour-grading industry standard of Gemmological Institute of America (GIA) established a key chart starting from D to Z, whereby each level affects the value or price of a diamond.  The charts grades the lack of colour, or degree of yellow hue/tint caused by levels of nitrogen present within the carbon crystal structure of a diamond. Graded for the degree of colourlessness and brilliancy exhibited by a diamond.

D – Exceptional White + – An Ultralight Beam of Pure  Carbon– the diamond is a pure beam of crystal light that nature has created and man revealed. Light reflected and refracted within creates spectral proportions of a beautiful stone.  This kind of beauty demands the highest price.

E – Exceptional White The very difference is slight between D and E colour diamonds, however to the trained gemmologist’s eye it is possible to detect the differenceLight hitting the stone creates vibrant fire – refracted light causing an amazing burst of spectral colours.

F – Rare White + –  Again the difference is slight between E and F colour diamond. Diamond is colourless, brilliant and of fine quality. Most reputable fine jewellers set F colour diamonds in their collection jewellery.

G – Rare White In comparison to F colour diamond, G colour diamond exhibits a slight hint yellow – almost an idea of hue within the diamond, however it still exhibits very bright and brilliant stone.

H – White – The Average White – The diamond is an averagely colourless white. Set in jewellery the crown – the top half of the diamond has good lustre, exhibiting more white than yellow tint.

I – Slightly Tinted White – From here on in, this is when the diamond is has a tint of yellow detectable to the human eye.

J – Slightly Tinted White +The yellow tint is a degree stronger sparkle of the diamond is – loosing its shine.

K – Tinted WhiteThe diamond is noticeable yellow tint.

M to X- Light Yellow White –  The yellow hue has hints of a light canary yellow – overtly visible to the human eye.


clarityDiamond crystal  forms within the earth’s surface over millennia and within the process of formation mineral crystals, gases, dust, cleavages and fractures occur internally and externally on the carbon crystal lattice. And after the diamond has been cut by a lapidarist and been through the mills – fractures, abrasion and other superficial damages may occur. The size and location of these inclusions and blemishes affect the clarity assessment of a diamond.

Internally Flawless – IF – Incredibly Freakingly Amazing– diamond is literally the purist specimen of crystal to be unearthed and it has been cut in such a way that man has created a mini masterpiece of a rock. Everyone knows a master pieces are rare and command a very high price.

Flawless –  No overt visible inclusions. With a 10 – 20 times  magnification loupe very small speck (s) of dust may be visible, however difficult to detect.
VVSI1- Very Very Slight Included One –  A few small specks of gas bubbles or dust  visible with a 10 times loupe. One might need to look with a 20 x magnification to see them properly. Diamond is bright and brilliant.

VVS2Very Slight Included Two  – Similar to VVS1,  however gas bubbles and dusks pecks are fractionally bigger. Diamond is  bright and lively.

SI1: Slightly Included One – Two or three minor inclusions – light coloured crystals, feathers,  cleavages, fractures within the diamond located on the kite and star facets.

Si2Slightly Included Two –  Similar to the above, however inclusion are centrally located on the table facet.

 Si3- Doesn’t officially exist – graded when a diamond is on the threshold between Si2 and PI1.
Some Gemmologist’s and diamond graders use it when they cannot decide whether a diamond is good enough to be  Si2 or or tethering on P1.
Pi/Ii: Included 1-  This is when significant dark inclusions or clouds are centrally situated on the table facet or kite facets which are overtly visible with a naked eye. No need for magnification.

P2 /I2: Included 2 – Dark inclusions, clouds, cleavages staring you in the face – significant surface reaching cleavages from the girdle, the edge of the stone. there is a fracture from the centre to the edge of the stone. Inclusions, and fractures beauty or durability is affected. These inclusion or fractures inhibit light moving around the diamond freely therefore affecting the lustre and brilliancy.
P3/I3Included 3- Beauty and durability is of the diamond compromised. Large and significant dark inclusions centrally situated, possibly a white cloud covering the majority of the diamond thus affecting the reflection and light and lustre. or a large fracture across the diamond stemming from the one side of the girdle to the other.

Choosing an Engagement Ring- Part one

This is guide is set out to assist you in choosing an engagement ring.  Layed out as a comparison of diamond size, budget and a selection of channels where you may purchase the engagement ring of your choice. Reviewing traditional high street ‘bricks and mortar’ jewellery retailers in major cities in the United Kingdom and a variety of local and international online e-tailers.

DIAMOND EYE shall assess the 2mm 18ct gold classic solitaire round brilliant diamond engagement ring in three diamond carat weights – a 0.25ct diamond; 0.50ct diamond and a 1ct diamond.

As diamonds are not all created equal. Diamond colour, clarity, carat and cut – the 4 C’s of diamonds effect the price. In my experience, I deem diamonds of  G-H colour to be of good value, comparatively white, bright and lively. Diamonds of  SI1 – S12 clarity are also of great quality-  inclusions in the diamond do not affect the beauty of the diamond. A perfect medium. A good quality diamond exhibiting beauty and brilliance.




025ct Diamond

An 18ct 0.25ct Diamond Solitaire Engagement Ring.


Goldsmiths – £650 Diamond quality H colour; SI2 clarity

Beaverbrooks – £1400 (Sale £995) Diamond quality G colour; SI1 clarity

Fraser Hart- £999 (Average) Diamond colour and clarity not stated, unless certificated

Chisholm Hunter- £995  (sale £695) – Diamond quality G-H colour; SI1 clarity 

H Samuel- £899 (Sale £599) Diamond colour and clarity not stated


Based on diamond quality H colour; SI1 clarity

Blue Nile – £606  Accompanied with GIA certificate

77 Diamonds – £692 Accompanied with GIA certificate

Amazon- £554  Accompanied with IGI certificate

James Allen – £685 – Accompanied with GIA certificate

VERDICT: Buying online is seemingly the most cost effective way to get a good quality diamond. However, if lo you are desire human interaction and looking to buy from one of the multiple jewellery stores, timing the purchase of the engagement ring at the time is key to getting more diamond value for your money. Special offers and sales usually occur after right Christmas and April -May.

Tip ♦ Diamonds of 0.20ct – 0.29ct weight are usually of a similar price to 0.25ct.


   0.50ct DiamondAn 18ct 0.50ct Diamond Solitaire Engagement Ring.


Goldsmiths: £1350 Diamond colour and clarity not stated.

Beaverbrooks: £3250 Diamond quality G colour; SI1 clarity

Fraser Hart: £1499 Diamond colour and clarity not stated

Chisholm Hunter- £2250 (Sale £1495- £1795)   Diamond quality G-H colour; SI1 clarity

H Samuel: £1799 – (Sale £899) Diamond colour and clarity not stated


Based on diamond quality H colour; SI1 clarity

Blue Nile : £1205 – Accompanied with a GIA certificate.

77 Diamonds: £1365 – Accompanied with a GIA certificate

Amazon- £1388 – Accompanied with an IGI certificate

James Allen- £1744 – Accompanied with a GIA certificate

VERDICT:  Again, buying online is seemingly the most cost effective way to get a good quality diamond and choose the diamond grade to suit your budget. The multiple stores which do not state the diamond quality -are assumed to be offering I-K colour diamonds – diamonds are not as white, exhibiting traces of a yellow tint and P1-P2 clarity- inclusions are visible to the human eye and can possibly affect the beauty and durability of the diamond.

Tip ♦ Diamonds G-H colour and  Si1 & S12 clarity are usually good value for money. White and brillant, with no inclusions visible to the human eye.


1ct Diamond TF

An 18ct 1ct Diamond Solitaire Engagement Ring


Goldsmiths: £4500 Diamond  colour and clarity not stated 

Beaverbrooks: £8950 Diamond  I colour; VSI clarity 

Fraser Hart: £4250 This multiple does not clearly state the diamond colour and clarity. However under the diamond buying guide, it is stated that they deem I- J colour diamonds value for money, therefore we are to assume diamonds are of that grade.

Chisholm Hunter: £4995 Diamond  colour and clarity not stated 

H Samuel£4499-£6299  Diamond I colour (below average);  P1 clarity- inclusions visible to the human eye.


Based on diamond quality H colour; SI1 clarity

Blue Nile£3580 The online jewellery retailer has a unique shopping experience, as you can  choose your the type of metal, type of diamond shape, size, colour and clarity. The online platform is well suited for online shopping experience.

77 Diamonds £4,045 (Approx)  Accompanied with a GIA certificate

Amazon – £2814   Accompanied with an IGI certificate

James Allen –£3511  Accompanied with GIA certificate

 VERDICT: Buying online is seemingly the most cost effective way to get a good quality diamond. You may choose you own setting,pick a diamond from a large database to suit your budget and a diamond laboratory you deem most credible.

 However, if you are looking to buy from one of the multiple jewellery stores, timing the purchase is key in getting more diamond value for your money. Special offers and sales usually occur after Christmas period and April – May.

Tip ♦ Diamonds just below the exact 1ct weight cost significantly less. Diamond weights of 0.90ct-0.99ct may have a similar visual effect to a 1ct diamond.