Round-Shaped Stones
Measured across the widest part.

Oval-Shaped Stones
Measured vertically from the top to the bottom, and
across the widest part.

Pear-Shaped Stones
Measured vertically from the top to the point, and
across the widest part.

Octagon or Emerald - Shaped Stones
Measured vertically from the top to the bottom, and
across the widest part.

Heart-Shaped Stones
Measured vertically from the top to the bottom, and
across the widest part.

Square or Princess - Shaped Stones
Measured vertically from the top to the bottom, and
across the widest part.

Baguette-Shaped Stones
Measured vertically from the top to the bottom, and
across the widest part on straights, or both end
widths on tapers.

Triangle-Shaped Stones
Measured vertically from the base to the point.

Marquise-Shaped Stones
Measured from the top point to the bottom point, and
across the widest part.