Round Cut

The round brilliant cut is the most popular diamond shape, it was developed from mathematical calculation that maximized the brilliance and dispersion of light. Today, round accounts for more than three quarter of all diamonds sold.

Round Cut
Size pointer mm f+
vvs
f+
vs1
f+
vs2
f+
si1
f+
si2
f+
si3
gh+
vvs
gh+
vs1
gh+
vs2
gh+
SI
i+
vvs-vs
i+
vs
-2 0.005 DOWN 1.25 mm down
-6 1/2 0.005 - 0.029 1.25 - 1.80 mm
+6 1/2 0.3 - 0.079 1.80 - 2.70 mm
+11 0.8 - 0.139 2.79 - 3.30 mm
1/6 0.14 - 0.179 3.30 - 3.60 mm
1/5 0.18 - 0.229 3.60 - 3.80 mm
1/4 0.23 - 0.299 3.80 - 4.10 mm