Diamond in a Square: 3 yard quilt pattern

You can sew this diamond into a square quilt pattern with just 3 yards of fabric! I love seeing how many people are sewing my free 3 yard quilt patterns. They are easy to make and very popular. If you have three yard pieces of fabric in your stash and you're feeling creative, you can make a quilt. This fun quilt uses the Diamond in a Square quilt block to create a 50″ x 58″ quilt pattern with 8″ quilt blocks.

Other names for diamond in a square block include square on point quilt block or square in a square quilt block.

This blog post has been converted to optional PDF optimized for printing. Find it here. The free Diamond in a Square 3 Yard Quilt Pattern is included in the blog post below and is free to read, print, and sew! Simply press CTRL+P on your computer to print. The print-optimized PDF download for $3 is optional. Did you know that you can organize ALL print-optimized PDF files into one library that you can access at any time? Check it out.

How big is a 10 yard quilt?

This particular quilt finishes at 50″ x 58″, which is a great throw sized quilt. You will have enough fabric to finish the quilt top, including 30 blocks and 2 borders. More fabric is needed for the binding and back of the quilt.

Most 10 yard quilts are quilts or quilts because they don't require a lot of fabric. Most of them would also make an adorable baby quilt with 3 yards of fabric. Since this type of quilt is not very large, you can finish it quickly and give it as a gift or use it in your home. Because of their size, quilts like this are easy to quilt on a home sewing machine.

Even though this quilt pattern has only one block – the diamond in a square block – sewing the same block with different fabrics reveals secondary patterns.

Can you see the stars? My step-by-step quilting tutorial includes quilt assembly tips to help you get the best results.

If you enjoy using your AccuQuilt fabric cutter like I do, I will share the optional cutting die numbers to make this model compatible with Accuquilt. Using an Accuquilt is optional, but I love it! See all of my Accuquilt compatible quilts. Look under the cutting dimensions below for a list of fabric cutting dies you can use instead.

How to choose the right 3 meters of fabric

All of my 3 yard quilt patterns make choosing your fabric so easy. First, find a beautiful “target fabric” in your stash or local quilt store. It should be a fabric that really sings to you – or that makes you think of the quilt's intended recipient.

In the example above, my main fabric is a beautiful orange, pink, and navy floral print from Minky Kim (Riley Blake) that I had in my stash. Unfortunately it is no longer available.

After choosing your main fabric, choose one lighter coordinating fabric and one darker coordinating fabric.

Wouldn't this quilt pattern also make a beautiful quilt in natural tones?

I used my EQ8 Quilt Design Software to see what this quilt would look like using the Hello, Bear collection of Bonnie Christine for Art Gallery Fabrics. Makes me want to cuddle up on the couch with someone!

If you follow these instructions for choosing your fabrics, you can't go wrong, and you probably already have 3 fabrics in your stash that will make a beautiful quilt.

Diamond in a Free Three Yard Square Quilt Pattern

This free quilt pattern includes instructions for the diamond in a square block, of which you will make 2 different variations. There are 30 easy blocks in this quilt, and each block finishes at 8 inches.

Including borders, this finished quilt measures 50″ x 58″. It's perfect for snuggling up on the couch, gifting to a friend, or donating to Value Quilts, Linus Projector another worthy organization.

Let's get creative and sew a beautiful quilt today!

Important note: This pattern extracts as much as possible from each meter of fabric. The width of each piece must have 42″ of usable fabric. Most fabrics printed within the last 5 to 10 years will work great because they are 44 inches wide including the selvedges, so they are 42 to 43 inches wide after cutting the selvedges .Please measure the width of your fabric pieces before starting to ensure And carefully follow the cutting charts below.

You will need:

  • 3 1 meter cuts of fabric (one main fabric, one darker fabric and one lighter fabric)*
  • a rotary cutting acrylic ruler and a mat
  • sewing machine
  • thread (I suggest thread to match the lighter fabric)
  • ironing board and iron

To sew the quilt top into a finished quilt, you will also need:

  • 3 yards of backing fabric (or enough to piece a 55″ x 63″ or larger quilt back)
  • a piece of fleece at least 55″ x 63″
  • 1/2 yard of fabric for binding


Fabric layout for 1 meter of focus fabric.

Fabric A is your main fabric. From this fabric, cut out:

  • 15 squares 6 1/8” x 6 1/8”
  • 5 strips 3″ x 42″ for the exterior border

Note: Depending on the width of your fabric, you may need to cut a little more fabric for the outer border. There will be enough of them, as shown in the diagram.

Optional Accuquilt Cutting Instructions:
Fabric layout for 1 yard of darker fabric.

Fabric B is the darkest fabric. From this fabric, cut out:

  • 15 squares 6 1/8” x 6 1/8”
  • 30 squares 4 7/8” x 4 7/8”

Tip: Pay special attention to the cutting pattern of the darker fabric.

First of all, cut 3 strips of 6 1/8” x width of fabric (WOF). From each of these strips, cut 5 squares of 6 1/8” x 6 1/8” and 2 squares of 4 7/8 ” x 4 7/8”. Then cut the rest of the required squares from the remaining fabric.

Optional Accuquilt Cutting Instructions:
  • Instead of cutting 30 – 4 7/8″ squares, cut 60 – 4″ HST triangles using the 55710 die (also found in the Qube 8-inch Mix and Match Set). Be sure to always follow the tip above to cut the largest squares of 3 strips first.
Fabric layout for 1 meter of lighter fabric.

Fabric C is the lightest fabric. From this fabric, cut out:

  • 30 squares 4 7/8” x 4 7/8”
  • 5 strips 3″ x 42″ for the interior border
Optional Accuquilt Cutting Instructions:

Quilt assembly

Use a little 1/4” seam allowance and a regular stitch length such as 2 – 2.5.

Tip: It helps to use a little 1/4 inch seam allowance when these diamonds form square blocks. This way, you will have a little extra to cut and your pieces will be perfectly sized.

How to Sew Diamond into a Square Quilt Block

1. Cut all 4 7/8″ squares of Fabric B and Fabric C in half diagonally. You should have 60 triangles in each fabric.

2. Draw a center line on each 6 1/8″ square of fabric A. This is very simple to do by folding each square in half and lightly pressing the fold with your iron.

3. Sew a triangle from fabric B to one side of the square, using the center line you marked to help you center the triangle on the square.

4. Then sew another triangle in fabric B to the other side of the square. Press the points of the triangle outwards. Use a ruler and rotary cutter to help you cut the dog ear triangles along the top and bottom edges.

5. Sew two more triangles of fabric B to the top and bottom edges of the square. If you want, you can mark the center of the square in the opposite direction to help you sew these triangles correctly as well.

6. Press the block and cut off the dog ears and any extra fabric to make an 8 1/2″ square block.

Repeat to create 15 Diamond in Square quilt blocks from fabrics A and B and 15 blocks from fabrics B and C, as shown.

Assemble the diamond into a 3 yard square quilt top

1. Sew 5 quilt blocks in a row containing three fabric blocks A/B and two fabric blocks B/C. Make 3 rows like this.

2. Sew 5 quilt blocks in a row containing two fabric blocks A/B and three fabric blocks B/C. Make 3 rows like this.

3. Sew the six rows of quilt blocks together alternating.

Measure and sew the inside border

1. Sew all 3-inch strips of the lightweight fabric (fabric C) together to form one long strip. You will cut pieces of it to make the interior border.

The expected length of the side border pieces is 48 1/2″. I highly recommend measuring the quilt top and cutting all border pieces to size. Learn how to cut quilt borders to size . Secure the side borders.

2. The expected length of the top and bottom border pieces is 45 1/2″. Measure your quilt and cut two strips for the top and bottom border. Attach the top and bottom border pieces.

Measure and sew the outer edge

1. Sew all of the 3-inch A fabric strips together to form one long strip. You will cut pieces of it to make the outer border.

The planned length of the side border pieces is 53 1/2″. Measure the quilt top with the inside border and cut two strips for the side edges. Attach the side borders.

2. The expected length of the second top and bottom borders is 50 1/2″. Measure the top of your quilt with the inside border and cut two strips for the top and bottom edges. If you need additional fabric for the border exterior, you should have enough with your scraps of fabric A.

Finish the diamond in a three yard square quilt pattern

1. Cut or piece together a piece of quilt backing fabric 55″ x 63″ or larger and form a quilt sandwich with the backing, batting and top.

2. Brush with iron-on fleece, pins or brush with spray.

3. Quilt as desired. Straight line quilting or crosshatch quilting with your walking foot would be quick and easy.

4. Cut 5 binding strips and bind using your preferred method. This is my favorite quilt binding method.

As always, I love seeing the quilts you make with my free sewing patterns. Please post a photo on Instagram and tag me @sewcanshe so I can take a look!


Disclosure: Some of my posts contain affiliate links. If you purchase something through one of these links, I may receive a small commission, so please support SewCanShe when you shop! All opinions are my own and I only suggest products that I actually use. 🙂

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