Quilt block · Four-patch · Intermediate
Diamonds quilt block
A square on point filled with rows of small dark and light triangles under a big dark triangle at the top, with a light triangle at the bottom and large light triangles in the corners.
What to cut for one block
A 6″ finished block measures 6½″ before it’s sewn into a quilt. Each fabric’s yardage is the least that cuts its strips across the width of fabric, with a strip to spare for straightening.
Background · Snow in the picture
4 corner triangles, 1 medium triangle and 12 small triangles
- B1 square 4¼″cut twice on the diagonals
- A2 squares 3⅞″cut once on the diagonal
- C3 squares 2¾″cut twice on the diagonals
Dark · Navy in the picture
1 medium triangle and 12 small triangles
- B1 square 4¼″cut twice on the diagonals
- C3 squares 2¾″cut twice on the diagonals
Worked out by @quarterinch/cutting · ¼″ seams included · strips cut across 42″ of usable width · the letters are the pieces the sewing steps name
A 9″ finished block measures 9½″ before it’s sewn into a quilt. Each fabric’s yardage is the least that cuts its strips across the width of fabric, with a strip to spare for straightening.
Background · Snow in the picture
4 corner triangles, 1 medium triangle and 12 small triangles
- B1 square 5¾″cut twice on the diagonals
- A2 squares 5⅜″cut once on the diagonal
- C3 squares 3½″cut twice on the diagonals
Dark · Navy in the picture
1 medium triangle and 12 small triangles
- B1 square 5¾″cut twice on the diagonals
- C3 squares 3½″cut twice on the diagonals
Worked out by @quarterinch/cutting · ¼″ seams included · strips cut across 42″ of usable width · the letters are the pieces the sewing steps name
A 12″ finished block measures 12½″ before it’s sewn into a quilt. Each fabric’s yardage is the least that cuts its strips across the width of fabric, with a strip to spare for straightening.
Background · Snow in the picture
4 corner triangles, 1 medium triangle and 12 small triangles
- B1 square 7¼″cut twice on the diagonals
- A2 squares 6⅞″cut once on the diagonal
- C3 squares 4¼″cut twice on the diagonals
Dark · Navy in the picture
1 medium triangle and 12 small triangles
- B1 square 7¼″cut twice on the diagonals
- C3 squares 4¼″cut twice on the diagonals
Worked out by @quarterinch/cutting · ¼″ seams included · strips cut across 42″ of usable width · the letters are the pieces the sewing steps name
How it’s sewn
For the 6″ block. Choose another size above and these steps follow it.
- Add 10 corner triangles
Sew the Background C triangle across the corner, along its long edge, and press toward the triangle.
- Make 2 sections
Sew the two parts together along the diagonal seam. Press the seam to one side.
- Add 2 corner triangles
Sew the Background C triangle across the corner, along its long edge, and press toward the triangle.
- Add a corner triangle
Sew the Dark C triangle across the corner, along its long edge, and press toward the triangle.
- Make 1 section
Sew the two parts together along the diagonal seam. Press the seam to one side.
- Make 2 sections
Sew the two parts together along the diagonal seam. Press the seam to one side.
- Add a corner triangle
Sew the Dark C triangle across the corner, along its long edge, and press toward the triangle.
- Make 1 section
Sew the two parts together along the diagonal seam. Press the seam to one side.
- Make 1 section
Sew a Dark B triangle and 2 sections together in a column. Press toward the plain pieces.
- Make 1 section
Sew 2 sections and a Background B triangle together in a column. Press toward the plain pieces.
- Add 2 corner triangles
Sew the Background A triangle across each corner in turn, along its long edge, and press toward the triangle.
- Sew the units and pieces into 2 rows
Lay out the units and pieces as in the picture and sew them into 2 rows. Press the seams in row 1 to the left, row 2 to the right, and so on, so they nest when the rows are joined.
- Join the rows
Join the 2 rows, matching and nesting the seams where they meet. Press the long seams open or to one side. The block measures 6½″ (6″ finished).
For the 9″ block. Choose another size above and these steps follow it.
- Add 10 corner triangles
Sew the Background C triangle across the corner, along its long edge, and press toward the triangle.
- Make 2 sections
Sew the two parts together along the diagonal seam. Press the seam to one side.
- Add 2 corner triangles
Sew the Background C triangle across the corner, along its long edge, and press toward the triangle.
- Add a corner triangle
Sew the Dark C triangle across the corner, along its long edge, and press toward the triangle.
- Make 1 section
Sew the two parts together along the diagonal seam. Press the seam to one side.
- Make 2 sections
Sew the two parts together along the diagonal seam. Press the seam to one side.
- Add a corner triangle
Sew the Dark C triangle across the corner, along its long edge, and press toward the triangle.
- Make 1 section
Sew the two parts together along the diagonal seam. Press the seam to one side.
- Make 1 section
Sew a Dark B triangle and 2 sections together in a column. Press toward the plain pieces.
- Make 1 section
Sew 2 sections and a Background B triangle together in a column. Press toward the plain pieces.
- Add 2 corner triangles
Sew the Background A triangle across each corner in turn, along its long edge, and press toward the triangle.
- Sew the units and pieces into 2 rows
Lay out the units and pieces as in the picture and sew them into 2 rows. Press the seams in row 1 to the left, row 2 to the right, and so on, so they nest when the rows are joined.
- Join the rows
Join the 2 rows, matching and nesting the seams where they meet. Press the long seams open or to one side. The block measures 9½″ (9″ finished).
For the 12″ block. Choose another size above and these steps follow it.
- Add 10 corner triangles
Sew the Background C triangle across the corner, along its long edge, and press toward the triangle.
- Make 2 sections
Sew the two parts together along the diagonal seam. Press the seam to one side.
- Add 2 corner triangles
Sew the Background C triangle across the corner, along its long edge, and press toward the triangle.
- Add a corner triangle
Sew the Dark C triangle across the corner, along its long edge, and press toward the triangle.
- Make 1 section
Sew the two parts together along the diagonal seam. Press the seam to one side.
- Make 2 sections
Sew the two parts together along the diagonal seam. Press the seam to one side.
- Add a corner triangle
Sew the Dark C triangle across the corner, along its long edge, and press toward the triangle.
- Make 1 section
Sew the two parts together along the diagonal seam. Press the seam to one side.
- Make 1 section
Sew a Dark B triangle and 2 sections together in a column. Press toward the plain pieces.
- Make 1 section
Sew 2 sections and a Background B triangle together in a column. Press toward the plain pieces.
- Add 2 corner triangles
Sew the Background A triangle across each corner in turn, along its long edge, and press toward the triangle.
- Sew the units and pieces into 2 rows
Lay out the units and pieces as in the picture and sew them into 2 rows. Press the seams in row 1 to the left, row 2 to the right, and so on, so they nest when the rows are joined.
- Join the rows
Join the 2 rows, matching and nesting the seams where they meet. Press the long seams open or to one side. The block measures 12½″ (12″ finished).
Blocks like it
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More like this: Four-patch quilt blocks · all quilt blocks
Questions
Short answers.
Something else? A real person replies.
hello@quarterinch.app
What size should I make it?
Its 8 × 8 grid lands on the ⅛″ marks at 6″, 9″ and 12″, so every piece measures with a ruler at all three. It also cuts cleanly at 4″, 7″, 8″, 10″, 14″, 15″, 16″ and 18″. In Quarter Inch you can make it any size, and it says when a cut falls between the lines.
Can I paper piece it?
Yes. It splits into 8 sections (A, B, C, D, E, F, G and H), each sewn on its own paper in order and then joined with straight seams. In Quarter Inch, the Foundations tab prints its papers at true size (with Quilter).
Is it a good block for a beginner?
It’s an intermediate block: 30 pieces in 3 different shapes and 17 points to match. Take it slowly and pin the points. We work the level out from the block’s own geometry, never by eye.