Diamonds at Marek Jewelers		The 4 C's of Diamond Value Diamond Certificate
G.I.A. - Gemological Institute of America (GIA)

Diameter		Carat
4.10 mm		0.25
5.20 mm		0.50
6.50 mm		1.00
7.10 mm		1.25
7.40 mm		1.50
7.90 mm		1.75
8.20 mm		2.00
8.70 mm		2.50
9.10 mm		3.00

VVS1 - Minute inclusions - extremely difficult to see at 10S. VVS2 - Minute inclusions - very difficult to see at 10X.  More than one pinpoint. VS1 - Minor inclusions - difficult to see face-up at 10X. VS2 - Minor inclusions - somewhat easy to see face-up at 10X. Sl1 - Noticeable inclusions - easy to see at 10X. Sl2 - Noticeable inclusions - very easy to see at 10X; not visible to unaided eye; may be visible through the pavilion. l1 - Obvious inclusions at 10X - visible to unaided eye. l2 - Obvious inclusions - easily visible to unaided eye. l3 - Prominent inclusions - extremely easy to see with unaided eye; usually affect durability.  Borderline, Industrial Grade.