The square diamond quilt block is a simple four patch block with lots of designs within designs. It really makes a striking quilt and I have shown below two quilt ideas – one with a little red added in to give it some pop. I have made the block here as a 16″ square.
Cutting requirements for the square diamond quilt block
2.1/2″ squares: four white, four green
2.7/8″ squares: sixteen green, sixteen white
12.1/2″ by 2.1/2″ rectangles: two white, two green
Making the square diamond quilt block
Make half square triangle units with the 2.7/8″ squares. Place a green square right sides together with a white square and mark a line along the diagonal. Sew a 1/4″ seam either side of the marked line and cut along the line.
This will produce two half square triangle units which are now 2.1/2″ squares. Press the seam allowances towards the green and trim the two corners where the fabric sticks out.
I’ve made the central section of the block using mostly half square triangle units. Lay the squares out in six rows of six. There are two white squares in the top and the bottom rows, with two green squares in the two side columns. The rest are all half square triangles and I think it’s easiest to look for the larger shapes when you place them. In the top and bottom rows there’s a larger green triangle pointing away from the middle. On each side there are two green hill shapes formed with a square and two half square triangles. On the top and bottom rows there are two white hill shapes formed in the same way. In the main part of the block there are two pairs of green diamonds, each formed with four green triangles and three white diamonds across the middle, again formed with four white triangles.
Sew the squares together across each row and then sew the rows to each other to complete the central section.
The frame around this section is made with the 12.1/2″ rectangles and four half square triangle units.
The green rectangles are placed on the top and bottom and the white rectangles are placed on the sides. There is one half square triangle in each corner.
Sew the rectangle and two half square triangles together down each side to form columns. Sew the green rectangles to the central section to form another column.
Finally sew the three columns to each other to complete the square diamond quilt block.
I have shown a quilt made with sixteen blocks sewn together in four rows of four.
This makes an interesting quilt in its own right, but then I tried using an extra colour and rotating every alternate block. For this one I have changed the white rectangles to red, leaving the green rectangles in place. I think this one is more interesting than the basic quilt version.
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