Shells and Diamonds
The top is a sample of the 2" clam shell, and the bottom shows the different sizes of diamonds this ruler makes.
The bottom background fill is the 2" clamshell.
The dark pink sashing at the top shows an interlocking diamond design achieved with this template. Notice on the right sashing the 2"clamshell is used, and you can compare it's effect to the 4" clamshell (from the Shells and Swirls ruler) used on the bottom.