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B2C Jewels Grading System
Color
Color is a significant aspect in valuing diamonds. Diamonds can range from colorless to yellow, brown etc. The more colorless a diamond, the greater is its rarity, worth and price.
Conventional grading systems usually cover only 32 color grades, but the B2C Jewels Grading System provides a total of 44 color grades from D+ to R with the addition of ‘better (+)’ and ‘lower (-)’ grades between the standard color grade (e.g.: G+, G, and G-). All these grades (including sub-grades) impact the pricing, which is explained in the table below:
Shape Size Clarity Cut, Polish, Symmetry Color
 
Pricing
Difference from
First Grade (%)
Round 2.019 VVS1 EX
G+
G
G-
 
-7.8
-16.7
The table above indicates the price difference between color grades while other parameters remain constant. The prices are subjected to individual grade and market trends.
Color Shade (Hue)
Apart from color, other factors such as the shade or hue and the inherent fluorescence in a diamond also affect its overall color and are critical in the grading process. At times, a diamond crystal is found to have nitrogen or boron atoms along with carbon atoms. These form bonds giving rise to ‘color centre’, which radiates a deeper shade across the diamond. This process gives the diamond a Hue or Tone.
Depending on the intensity of concentration of these color centers, B2C has 12 graded color shades. All these sub-grades influence the price of a diamond, which is explained in the below mentioned table:
White-
(WH)
Off White-
(OWH)
Yellow-
(YL)
Brown-
(BR)
Yellowish Green-
(YLG)
Yellowish Brown-
(YLB)
Brownish Pink-
(BRP)
Pink-
(PN)
Pinkish Brown-
(PNB)
Green-
(GN)
Grayish Black-
(GBK)
Blue-
(BL)
Shape Size Clarity Color Cut, Polish, Symmetry
 
Color Hue
(shade)
 
 
Pricing
Difference from
First Grade (%)
Round 2.019 SI1 I EX
PNB
BRP
GNYL
BR
GBK
 
-9.1
-11.1
-12.1
-18.4
The table above indicates the price difference between color hue (shade) grades while other parameters remain constant. The prices are subjected to individual grade and market trends.
*The above mentioned detail parameters are used for pricing purposes only.