J.B. Grading System
Our diamonds pass through rigorous quality control and are assessed finely by qualified craftsmen. Each flawless diamond complies with stringent specifications of color, clarity and shape.
  • Color Scale
  • Color Shade
  • Fancy Colored Diamonds
Color Scale
Diamonds act as prisms, dividing light into a spectrum of colours and reflecting this light as colourful flashes referred to as a diamond's 'fire'. The more colourless a diamond is, the more vividly colourful the 'fire' will appear. Diamonds come in every colour of the spectrum, but the most popular gems are colourless. Truly colourless, icy-white diamonds are extremely rare, and therefore, most costly. Stones are graded by colour and given designations, depending on how far they deviate from the purist white.
The best way to see the true colour of a diamond is by looking at it against a white surface. Although the majority of diamonds come in shades of white, the gems also come in a spectrum of majestic colours, from red and canary yellow to blue, green and brown. These colourful diamonds, known as fancies, are valued for their depth of colour, just as white diamonds are valued for their lack of colour.
Grades in the colour of diamonds range from D - Z. D is being truly colourless and of the highest quality. E and F are also graded as colourless while G, H, I and J are near colourless. Diamonds graded K, L and M will have obvious hints of colour and as the scale approaches P, you may find subtle changes in hue and tone. The exceptions to the rule are 'Fancy' diamonds in well-highlighted colours that include pink, blue, red, green and canary yellow. These are particularly rare and highly treasured.
We have divided color shades intensity in diamonds into three categories as:
  • FAINT : Very Very Light Color Shade
  • LIGHT : Light Color Shade
  • STRONG : Strong Color Shade
Eg.
FBR = Faint Brownish Tinch,
LBR = Light Brownish Tinch
SBR = Strong Brownish Tinch
Similarly for all other shades we mention details about the tinch in three categories.
Types of colors :
BROWNISH (BR)
BLUEISH (BL)
GREENISH (GR)
PINKISH (PN)
GREYISH (GR)
GREENISH BROWN (GB)
type of colors
D Absolutely colourless. The highest colour grade, which is extremely rare.
E+ Colourless nearly to D colour
E Colourless. Only minute traces of colour can be detected by an expert gemmologist. A rare diamond.
F+ Colourless nearly to E colour
F Colourless, Slight colour detected by an expert gemmologist, but still considered a 'colourless' grade. A high-quality diamond.
G+ Colourless nearly to F colour
G Near - colourless. Colour noticeable when compared to diamonds of better grades, but these grades offer excellent value.
H+ Near colourless close to G colour
H Near - colourless. Slightly off-white when compared to diamonds of better grades but these grades offer excellent value.
I+ Near colourless close to H colour
I Off - white when compared to diamonds of better grades. Colour slightly detectable. A very good value stone.
J+ Off - white diamond but close to I colour.
J Light colour detectable with 10x diamond loupe. A very good value stone.
K+ This diamond is very close to J colour diamond but not exactly J colour
K Light colour detectable by the naked eye. A very good value stone.
L+ This diamond is very close to K colour diamond but not exactly K colour
L Noticeable colour. The colour is detectable by the naked eye. A very good value.
M+ This diamond is very close to L colour diamond but not exactly L colour diamond
M Clearly visible colour. Detectable with naked eyes. A very good value.
N+ Clearly visible colour. Detectable with naked eyes. A good value.
N This diamond is very close to N+ colour diamond but not exactly N+ colour diamond
O+ Clearly visible colour. Detectable with naked eyes.
O This diamond is very close to O+ colour diamond but not exactly O+ colour diamond
Color Shade
It has been noticed that a stone has a colour shade apart from its actual colour. To give you a brief idea of the same, we have different colour shades:
Types of Diamond Description Image
FBR – FAINT BROWNISH These diamonds look like having a Faint brown(very light) colour inside them, which we termed as brownish shade in diamonds.
LBR – LIGHT BROWNISH These diamonds look like having a Light brown colour inside them, which we termed as brownish shade in diamonds.
SBR – STRONG BROWNISH These diamonds look like having a brown colour inside Them, which we termed as brownish shade in diamonds.
FBL – FAINT BLUEISH These diamonds look like having a Faint bluish (Very light) colour inside them which we called as bluish shade diamonds.
LBL- LIGHT BLUEISH These diamonds look like having a Light bluish colour inside Them, which we called as bluish shade diamonds.
SBL – STRONG BLUEISH These diamonds look like having a bluish colour inside them which we called as bluish shade diamonds.
FGR – FAINT GREENISH These diamonds look like having a Faint greenish (very light) colour in them, which we termed as green shade diamonds.
LGR – LIGHT GREENISH These diamonds look like having a Light greenish colour in them, which we termed as green shade diamonds.
SGR – STRONG GREENISH These diamonds look like having a greenish colour in them, which we termed as green shade diamonds.
FPN –FAINT PINKISH These diamonds have Faint pinkish(very light) colour inside them called as pinkish shade diamonds.
LPN –LIGHT PINKISH These diamonds have Light pinkish colour inside them called as pinkish shade diamonds.
SPN – STRONG PINKISH These diamonds have pinkish colour inside them called as pinkish shade diamonds.
FGY – FAINT GREYISH These diamonds have greyish colour inside them called as Faint greyish (very light) colour shade diamonds.
LGY – LIGHT GREYISH These diamonds have greyish colour inside them called as Light greyish colour shade diamonds.
SGY – STRONG GREYISH These diamonds have greyish colour inside them called as greyish colour shade diamonds.
FMT – FAINT MIX TINCH These diamonds have Faint fancy(very light) tint inside them.
LMT – LIGHT MIX TINCH These diamonds have Light fancy tint inside them.
SMT – STRONG MIX TINCH These diamonds have fancy tint inside them.
FGB – FAINT GREENISH BROWN These diamonds have combination of slight Faint greenish and brownish(very light) shade inside them.
LGB – LIGHT GREENISH BROWN These diamonds have combination of slight Light greenish and brownish shade inside them.
SGB – STRONG GREENISH BROWN These diamonds have combination of slight greenish and brownish shade inside them.
Fancy Colored Diamonds
blue Diamonds
brown Diamonds
yellow Diamonds
green Diamonds
orange Diamonds
Certain diamonds are called 'Fancies'. These stones have intense natural colours that in some cases are very rare and command exceptional value. These stones are not colour graded with the scale above. Brown and yellow diamonds are the most common members of the Fancy group and have a distinct beauty of their own. Reds, blues and greens are extremely rare and highly sought after by designers and collectors. Colours are available in Blue, Brownish Pink, Greyish Black, Green Pink, Pinkish Brown, Yellowish Brown, Yellowish Green, White, Off White, Yellow and Brown.
Fancy colors are generally graded and categorized as following
Color Grade with Hue - yellow image
Faint
Very Light
Very Light
Fancy Light
Fancy
Fancy Intense
Fancy Dark
Fancy Deep
Fancy Vivid
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J. B. And Brothers Pvt. Ltd. is a Group Company of Yaelstar B.V.B.A., a Sightholder of the De Beers Group of Companies