The Midnight Diamond Blanket began with a photograph of patterned tilework. The kind where one simple geometric tile, repeated many times, builds into something far more intricate than any single piece suggests. I wanted to see whether tapestry crochet could create the same kind of effect and it turns out it can.

Each square contains four diamonds radiating from the centre, enclosed by curved lines. The squares are worked separately and joined with a discrete slip stitch join on the back, so the colourwork runs unbroken across the whole blanket.

The finished throw measures 92 x 114 cm (approximately 36 x 45 in) for 20 squares, and it’s simple to size up or down by making more or fewer squares.

Tapestry crochet can sound more advanced than it is here. Almost the entire blanket uses a single stitch, US double crochet (UK treble), with just one round of single crochet in the border. All the patterning comes from carrying and switching between two colours, so there’s no complex stitch sequence to track. That makes this pattern a great way to try tapestry crochet if it’s new to you.

WHAT’S INCLUDED
A 6-page PDF: full written instructions, a colourwork chart, pattern notes, step-by-step photos, and a link to a video tutorial for the square. Provided in both US and UK crochet terms.

DETAILS
Yarn: Swish DK by WeCrochet (100% superwash merino), DK weight

• Sample A: Nutmeg Heather (10 balls) + Lost Lake Heather (6 balls)
• Sample B: Delft Heather (10 balls) + White (6 balls) Yardage: approx. 1,250 yds (1,150m) main colour, 750 yds (700m) contrast, for 20 squares Hook: 3.5 mm Gauge: each square 21 x 21 cm (8.25 in). Gauge isn’t critical, though for tapestry crochet slightly tighter stitches than usual produce the best results. Skill level: intermediate - a good first tapestry crochet project for a confident beginner

A note on colour: the one thing that matters is tonal contrast. Choose two colours where one is significantly lighter than the other, not just different in hue. Photograph them together and view it in black and white to check.

YARN

Ready-made yarn packs in both suggested colourways: https://tidd.ly/4biFipG (aff) - available from 30 July 2026

Prefer to choose your own from the Swish DK range? You’ll need 10 balls of your main colour and 6 of your contrast: https://tidd.ly/4aNyu1Z (aff)

A FULLY GUIDED VERSION
If you’d like to be walked through the blanket from the first swatch to the final stitch, there’s a complete 29-video course on Teachable, with the written pattern included.
The nine square-round videos are also available for free on my YouTube channel but the course adds everything around them too: the technique practice, gauge and yarn guidance, joining, border, blocking, and care.
https://catherinecrochets.teachable.com/p/the-midnight-di...

FREE TUTORIALS
The full square tutorial is free on YouTube: https://youtu.be/TCaPU7w-3_M
You’ll find the supporting tutorials — joining, avoiding tangles, and tapestry crochet basics — in this playlist: https://www.youtube.com/playlist?list=PLLFYsNTU3G5VlNDdKl...

The full story of the blanket including design notes, yarn and colour guidance, and every link in one place, is here: https://catherinecrochets.com/midnight-diamond-blanket/

There’s also a Facebook group for makers working on this and other Catherine Crochets patterns, if you’d like to share progress or ask a question: https://www.facebook.com/groups/415248373350681

Designed by Catherine Noronha of Catherine Crochets, a tapestry crochet and colourwork specialist based in Surrey, UK.