Crystal Star Quilt Block Pattern

From our Free Quilt Block Pattern Library

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Skill Level: Beginner

The Crystal Star quilt block is yet another variation on the Sawtooth Star—this time a square in a square is added to the center for interest.

We use the Connector or Folded Corners technique for the center and Flying Geese. Add four more cut squares and that's all there is to it.

No special tools. No special rulers. All you need are your basic quilting supplies.

All will be crystal clear as you follow along in the tutorial.

Let's get started!

Crystal Star quilt block

General Instructions

All seams are 1/4".

When you are instructed to press, first press the pieced unit flat to set the seam. Suggestions are provided throughout these instructions on which way to press the seam allowances.

Click here for cutting instructions for additional block sizes.

A directional white and black print is used for the background.

Instructions are provided on how to cut and mark the patches so that the design moves across the block in one direction.

As you piece, flip back the corner of the patch BEFORE stitching to ensure that it is in the correct position. This quick check is much faster than having to rip out a patch that should have been turned a quarter turn.

While we've used the connector corners method here in this tutorial, the 'four at a time' Flying Geese method would also be an efficient way to make the Geese units, too.

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Step 1: Cut the patches for your Crystal Star

Crystal Star quilt block designCrystal Star design

Sample Size: 8" finished / 8½" unfinished

Grid: 4x4

Attribution: KC Star

AKA: Joining Star (Nancy Page), Lone Star ( Carrie Hall and Rose Kretsinger), Star of Virginia (Wallaces' Farmer), Texas Star (Carrie Hall and Rose Kretsinger)

Design Type: Star, 4-patch, Uneven 9-patch, large center

This block is the perfect example of why you want to make a practice block.

Though there seemed to be plenty of contrast between the fabrics laid out next to each other, the piecing looks a bit 'mushy' in the finished block.

To remedy this, I'd choose a more 'white' black and white print for the background next time.

Generations Quilt Patterns logo

Cutting Chart for a
Crystal Star Quilt Block

~Traditional Piecing x/Connector Corners ~

PatchFabricQtyFinished Block Size
4" 6" 8" 10" 12"
1 L 4 1½" x 2½" 2" x 3½" 2½" x 4½" 3" x 5½" 3½" x 6½"
2 D 8 1½" x 1½" 2" x 2" 2½" x 2½" 3" x 3" 3½" x 3½"
3 M 1 2½" x 2½" 3½" x 3½" 4½" x 4½" 5½" x 5½" 6½" x 6½"
4 L 8 1½" x 1½" 2" x 2" 2½" x 2½" 3" x 3" 3½" x 3½"
Unfinished Block Size 4½" 6½" 8½" 10½" 12½"
Grid Size 1" 1½" 2" 2½" 3"

The patches for this block are below. Notice particularly how the rectangle patches are cut—two in each direction of the print. This is to keep the print design flowing from top to bottom of the block.

The patches for the Crystal Star quilt block

Step 2: Assemble the units for the Crystal Star

Flying Geese Units

Make 4

Mark a diagonal line from corner to corner on the back of the eight #2 squares for the star points.

Align one of these marked squares with the end of a rectangle patch. The drawn line bisects one of the corners.

Stitch on the line. You can chain stitch these pieces.

Stitch one connector corner to each background rectangle

Press flat. Trim the seam allowance on the side of the stitching line closest to the corner.

Press the square open and towards the corner.

Align another #2 with the open end of the rectangle. The drawn line bisects the corner on the same long edge as the previous square did.

Stitch on the drawn line.

Stitch the second connector cornerThe red arrow points to my anchor cloth

Press flat, trim the seam allowance and press as you did for the first square.

If any of the #2 squares extend past the #1 rectangles, trim the patches even.

For this sample 8" finished block the Flying Geese measure 2-1/2" x 4-1/2" at this point.

Square in a Square Center

Make 1

We'll use the connector corner technique again.

Mark the backs of only four of the eight #4 patches with a diagonal line from corner to corner.

For a directional print, you'll want to mark the lines as shown below. For two the print runs top to bottom. For the other two, the print runs left to right.

Mark the connector corners for the center square

With RST, align the edges of two of the #4s with the larger #3. The ends of the drawn lines touch the sides of the large square.

Stitch on the line. Press flat, trim the seam allowance on the side of the stitching closest to the corner.

Stitch the first pair of connector cornersAfter the seam allowances are trimmed

Press the patches open and toward the corners.

Repeat for the two remaining marked #4s.

Stitch the final connector corner to the center squareThe red arrow points to my anchor cloth

If the #4 patches extend past the edges of the large squares, trim them even.

Your finished square in a square should measure 4-1/2" x 4-1/2" for this 8" finished block.

Step 3: Assemble your Crystal Star

Lay out the finished units and remaining cut squares for this Crystal Star block.

Lay out your finished units into rows

Sew them into rows. Press the seam allowances away from the Flying Geese.

Stitch the rows together, pinning if needed to help match the seams.

This is what the Crystal Star quilt block looks like from the back side.

For pressing a perfectly flat block—even with the added layer from the connector corners—use the Best Pressing Technique for Quilt Blocks.

It's so easy and works so well you'll wonder why you didn't think of it yourself!

Crystal Star quilt block finished from the backside

This is your finished Crystal Star quilt block.

Your finished Crystal Star quilt block

More blocks that use Connector Corners

As promised, below is a sampling of the free quilt block patterns found on this website that use this simple technique for creating triangle shapes out of nothing more than cut squares and rectangles.

Click each image to go to those instruction pages.

Autumn Leaf quilt block tutorial Big O quilt block tutorial Cotton Boll quilt block tutorial Crystal Star quilt block tutorial Double Necktie quilt block tutorial Evening Star quilt block tutorial Hour Glass quilt block tutorial Indian Hatchet quilt block tutorial Maple Leaf quilt block tutorial Maple Leaf Design quilt block tutorial Mississippi quilt block tutorial Ozark Maple Leaf quilt block tutorial Santa Fe quilt block instructions

For even more patterns, visit our Free Quilt Block Patterns Library.

Share your work to inspire other Quilters!

If you use our tutorials to make your blocks and quilts, there are some easy ways to share your creations so other quilters (including me!) can enjoy the fruits of your labor:

  • On Instagram please tag your blocks and quilts with the hashtag #GenerationsQuiltPatterns.
  • Visit our Show n'Tell page on the website. Click here to share photos and tell your own story, just start typing at 'The name of your quilt is...'. If you'd prefer to submit more photos than the form allows, simply email them to me at

I love seeing your work!

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For even more blocks to make...

Click here to learn about my favorite quilt book resources that inspire my patchwork designs.

For you, are quilt block patterns like potato chips... can't have just one?!!

Check the amazing resources I rely on for the majority of the quilt block designs you see on this website. 

To see if they're worthy of spot in YOUR quilting library, read about them HERE.

NOTE: All the attribution and alternate names shared in the Free Quilt Block Patterns Library came from these four resources.

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