Diamond Illusion Quilt – 10″ Square Precut Quilt

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Use a pack of 10″ precut squares to make the Diamond Illusion quilt! Coordinated scrappy or high contrast limited palettes all work well with this pattern. Want even more precut quilt patterns? Click Here to see more!

Diamond Illusion

60″ x 60″

Fabric Requirements

(36) 10″ squares or (1) Pack of precut 10″ squares like Jungle Cruise
Border — 1 1/3 yards
Binding — 5/8 yard
Backing — 4 yards

Cutting Instructions

From the border fabric, cut:
(6) 6 1/2″ x Width of Fabric (WOF) strips, sewn together and subcut into:
(2) 6 1/2″ x 48 1/2″
(2) 6 1/2″ x 60 1/2″

From the binding fabric, cut:
(7) 2 1/2″ x WOF strips

Block Assembly

Sort the 10″ squares into 18 light and 18 dark squares. It’s okay if there are medium value squares, use them to even out your numbers, and then pair them with a lighter or darker partner when sewing.

diamond illusion quilt

Mark the wrong side of a light 10″ square in half once. Layer a marked light 10″ square over dark 10″ square and secure. Sew 1/4″ from the marked line on both sides.

diamond illusion quilt

Cut apart on the marked line and press to the dark to make 2 Rail units.

diamond illusion quilt

Mark the wrong side of one of the Rail units in half, crossing the seam. Layer with an unmarked rail unit from its pair with the colors on opposite sides of one another.

diamond illusion quilt

Sew 1/4″ from the marked line on both sides. Cut apart on the marked line to make 2 Four Patch units.

diamond illusion quilt

Pop open the middle where all the seams meet and press for a flatter block. See image below for more illustration of how to split the seam.

diamond illusion quilt

Trim the Four Patch units to 9″ square.

diamond illusion quilt

Mark the wrong side of a Four Patch unit in half diagonally. Layer a mark and unmarked Four Patch of the same pair with the colors on opposite sides of one another as shown.

diamond illusion quilt

Sew 1/4″ from the marked line on both sides. Cut apart on the marked line to make 2 Diamond Illusion blocks.

diamond illusion quilt

Press and trim to 8 1/2″ square.

Repeat this process to make 36 Diamond Illusion blocks.

Quilt Assembly

diamond illusion quilt

Lay the blocks out as shown above in grayscale to help with value placement. There are lots of different possible layouts, so feel free to experiment! Sew 6 blocks together into a row. Make 6 rows. Sew the rows together to make the quilt center measuring 48 1/2″ square.

diamond illusion quilt

Sew the 6 1/2″ x 48 1/2″ border strips to the sides of the quilt center and press. Finally, sew the 6 1/2″ x 60 1/2″ border strips to the top and bottom of the quilt and press.

Quilt as desired and bind using preferred method to finish your Diamond Illusion quilt.

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