Ice Blue Diamond Granny Square Free Crochet Pattern

Introduction

This Ice Blue Diamond Granny Square is a calm, geometric little block that looks far more intricate than it is. It is written for beginners: every round uses only double crochet and chain spaces, so there are no tricky stitches to learn. Worked in cool ice blue and soft silver cotton, it has a crisp, slightly matte finish and a neat, flat texture that feels smooth and light in the hand. The diamond motif grows naturally from the center ring, giving you a boho square that is perfect for blankets, pillows, and any project that needs a cool, icy accent.

Materials Needed

• Yarn: (2) Fine weight yarn, 100% cotton, 50 g / 125 m per skein.
  • Color A (Ice Blue): 1 skein (approx. 10 yards used)
  • Color B (Silver): 1 skein (approx. 15 yards used)
• Hook: 3.25 mm (D/3) crochet hook
• Notions: Tapestry needle for weaving in ends, scissors, stitch marker (optional, for the beginning chain)
• Finished size: 13 cm x 13 cm (5.1 inches x 5.1 inches)

Abbreviations

• ch — chain: yarn over and pull through the loop on your hook.
• sl st — slip stitch: insert hook, yarn over, pull through both the stitch and the loop on your hook.
• dc — double crochet: yarn over, insert hook in stitch, yarn over, pull up a loop (3 loops on hook), yarn over and pull through 2 loops, yarn over and pull through the last 2 loops.
• sp — space: the gap made by a chain (for example, a ch-2 sp).
• st(s) — stitch(es).
• rep — repeat.

Gauge

23 sts x 12 rows = 4 inches (10 cm) in double crochet pattern. To check it, crochet a small swatch in dc, measure a 4-inch section, and adjust your hook size if your stitch count is off.

Tips Before You Start

• Count your corner groups every round. Each corner space should always hold the same increase group (either 3 dc, ch 2, 3 dc or 2 dc, ch 2, 2 dc) so the square stays flat and even.
• Keep your ch-2 corner spaces loose and consistent; tight corners make the square pull in and curl.
• Change colors by fastening off and joining the new color with a sl st in a corner space, which hides the join neatly in the corner.
• Work the first dc of each round into the same stitch or space as the join unless the pattern says otherwise, and always join to the top of the beginning ch-3.

Step-by-Step Instructions

Square (make 1)

With Color A, ch 4, join with sl st to form a ring.

R1: Ch 3 (counts as dc), 2 dc in ring, [ch 2, 3 dc in ring] 3 times, ch 2, join with sl st to top of ch-3. (12 dc, 4 ch-2 sps)

R2: Ch 3, dc in same st, dc in next 2 dc, [2 dc, ch 2, 2 dc] in next ch-2 sp, dc in next 3 dc, [2 dc, ch 2, 2 dc] in next ch-2 sp, dc in next 3 dc, [2 dc, ch 2, 2 dc] in next ch-2 sp, dc in next 3 dc, 2 dc in last ch-2 sp, ch 2, join with sl st to top of ch-3. (28 dc, 4 ch-2 sps)

Fasten off Color A. Join Color B with sl st in any ch-2 sp.

R3: Ch 3, 2 dc in same sp, [ch 2, 3 dc] in same sp, *dc in each dc across to next ch-2 sp, [3 dc, ch 2, 3 dc] in ch-2 sp; rep from * around, join with sl st to top of ch-3. (44 dc, 4 ch-2 sps)

R4: Ch 3, dc in each dc across, [2 dc, ch 2, 2 dc] in each ch-2 sp, join with sl st to top of ch-3. (60 dc, 4 ch-2 sps)

Fasten off Color B. Join Color A with sl st in any ch-2 sp.

R5: Ch 3, 2 dc in same sp, [ch 2, 3 dc] in same sp, *dc in each dc across to next ch-2 sp, [3 dc, ch 2, 3 dc] in ch-2 sp; rep from * around, join with sl st to top of ch-3. (76 dc, 4 ch-2 sps)

Fasten off Color A. Join Color B with sl st in any ch-2 sp.

R6: Ch 3, dc in each dc across, [2 dc, ch 2, 2 dc] in each ch-2 sp, join with sl st to top of ch-3. (92 dc, 4 ch-2 sps)

Fasten off.

Assembly and Finishing

This pattern makes one square, so there is no seaming required. Weave in all ends on the wrong side with your tapestry needle, working each tail through several stitches in different directions so it stays secure. Block the square by misting it lightly with water and pinning it to 13 cm x 13 cm (5.1 in x 5.1 in) on a blocking mat; let it dry completely. If you are joining several squares, block them all to the same size first, then seam them with a whipstitch or sl st join along the edges.

Pro Tips and Variations

• Swap the silver for cream or white for a softer, more neutral look, or use a variegated yarn for the outer rounds.
• Add a simple border of single crochet around the finished square to make joining blankets easier.
• Make a set of squares in alternating color orders (silver center, ice blue outer) for a checkerboard pillow or blanket.