Origami Diamond
The origami diamond is probably the cheapest diamond out there. Still, it's a classic and easy-to-make origami design.
Start with a square piece of paper. Then make a water balloon base.
Origami Diamond
Now fold up the four corners as if you were making a water balloon.
Now fold the lower edges of the square into the centerline.
The following two photos show the first edge folded, then all edges folded.
Now we've turned it upside down to show the pocket, and the flap to be tucked into the pocket.
Expand the pocket a little with your finger if necessary, to get the flap to fit.
After tucking in all four flaps, blow gently into the narrow end of the diamond to expand it.
Diamonds are a folder's best friend!
