Information On Diamonds

Information on Diamonds

Diamond Grading Terms

Diamond Colour

GIA Old World Terms Explanation
D Finest White ( Jager) Colourless
E Finest White (River) Colourless
F Fine White (River) Colourless
G Fine White (Top Wesselton) Near colourless:diamonds face up colourless. The slight traces of colour will not be apparent in the mounted stones to other than the trained eye.
H White (Top Wesselton) Near colourless:diamonds face up colourless. The slight traces of colour will not be apparent in the mounted stones to other than the trained eye.
I White (Top Wesselton) Near colourless:diamonds face up colourless. The slight traces of colour will not be apparent in the mounted stones to other than the trained eye.
J Top Silver (Top Wesselton) Near colourless:diamonds face up colourless. The slight traces of colour will not be apparent in the mounted stones to other than the trained eye.
K Silver Cape (Top Cape) Traces of colour. Small stones in this range will 'face up' colourless when mounted but larger stones will be tinted.
L Silver Cape (Top Cape) Traces of colour. Small stones in this range will 'face up' colourless when mounted but larger stones will be tinted.
M Light Cape Traces of colour. Small stones in this range will 'face up' colourless when mounted but larger stones will be tinted.
N-Z+ Light Cape - Fancy Yellow Diamonds graded N through Z+ display a yellowish tint even to the untrained eye.

Clarity

GIA Old World Terms Explanation
IF Internally Flawless No inclusions visible with a 10x lens even to an experienced grader
VVS1& VVS2 Very Very Slightly Included Minute inclusions, which are difficult, even for experienced graders, to see with a 10x lens
VS1 & VS2 Very Slightly Included Minor inclusions, observable with effort with a 10x lens
SI1 & SI2 Slightly Included Noticeable inclusions visible with a 10x lens
I1, I2 & I3 Pique 1, 2 & 3 Obvious inclusions, may be visible to the unaided eye. In I3/P3, they may affect the stone's durability