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Diamond Overlay Mosaic Crochet Blanket Pattern

This easy overlay mosaic crochet blanket pattern is the perfect project for yarn stash busting, mindfulness and so much more!

Using a simple stitch repeat that creates delicate diamonds that ripple through the entire blanket you can style the colours to match your decor and change the look of it entirely. 

With beginner crochet stitches, chart, written pattern and video tutorial, it’s a crochet pattern that anyone can make and enjoy for the home.

You can carry on reading to find the free pattern here in this blogpost or purchase an ad-free, printable PDF version of the Diamond Overlay Mosaic Crochet Blanket in my pattern stores to download and print.

colourful overlay mosaic crochet blanket pattern laid flat on white bed

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About the Mosaic Crochet Blanket Pattern

If you know anything about me as both a maker and a designer then you’ll know that I love crochet techniques and patterns that look tricky but are actually really easy!

This is definitely the case with this one.

I completely understand that it looks so complicated but what if I told you that you will only be using 1 colour of yarn for each row? And what if I also told you that you will only need to know how to crochet a US single crochet (UK double crochet) and US double crochet (UK treble)?!

That’s it! All you need to know are the very first two stitches that most of us learn in crochet. The key is to know when and where you use them – that’s where the pattern and chart come in.

The other great thing is that you don’t have to worry about loads of ends to weave in – you just turn them into tassels!

And if that’s not enough to tempt you – the pattern tells you how to adjust the sizing to make any size blanket you want!

Diamond Overlay Mosaic Crochet Blanket Pattern Pin 2 1

Overlay Mosaic Crochet Technique – a quick guide

Overlay mosaic crochet uses rows or rounds of US single crochet/UK double crochet in the back loops only of each stitch. You then work a US double crochet/UK treble crochet into the front loop of stitches from lower rows as indicated in the pattern or the chart to form the design over the top of your rows.

It’s a really simple technique that looks really tricky but is so fun when you get the hang of it!

You might have heard about the inset mosaic crochet technique too – that is different from overlay mosaic crochet as it use 2 rows of each colour and doesn’t work into back loops or front loops.

There are lots of opinions about if one is better or easier than the other and as with most things it’s up to personal preference!

I really like both techniques and find that they work really well for different projects (again, as with most things!).

Other Inset and Overlay Mosaic Crochet Patterns to Try

Before you dive into the blanket I’d love to show you some of my other designs using both overlay and inset mosaic crochet . Some of them are worked in the round (less ends to worry about!) and some are in flat rows.

The Diamond Mosaic Blanket Tension and Sizing Options

The finished blanket measures 120X90cm (47X35.5in) without tassels.

Tension (gauge) is 13 sts and 11 rows to measure 10X10cm (4X4in) over pattern using 6mm hook.

Yarn for this Crochet Blanket

To make this crochet blanket I used Rowan Pure Wool Worsted (100% wool, 100g/200m.)

2 Balls of each:

A; Chestnut, B: Periwinkle, C: Olive, D: Buttercup, E: Papaya, F: Magenta

Other Materials You Will Need

Along with your yarn, you will need the following:

6mm (US J) crochet hook – my favourites are Furls Streamline Swirl crochet hooks or Clover Amour crochet hooks.
Tapestry needle
Scissors

Crochet Abbreviations and Glossary

ch(s) – chain(s)

ss – slip stitch

RS – right side

rep – repeat

blo- back loop only

flo- front loop only

Crochet Stitches used in the Crochet Blanket

The Diamond Mosaic Blanket uses the following crochet stitches.

Standard UK Crochet TermStandard US Crochet Term
dc – double crochetsc – single crochet
tr – treble crochetdc – double crochet

Other techniques you’ll need to know: how to fasten off and weave in your ends in crochet.

How to get the Diamond Blanket Pattern

This crochet blanket pattern is a free crochet pattern in US and UK terms on the blog for everyone to enjoy, just scroll down to find it.

There are a few ways you can access and enjoy this crochet pattern and help support HanJan Crochet.

  1. You can find and use the crochet pattern here on the blog that is supplemented with ads.
  2. You can purchase, print and keep the 5 page ad-free pattern PDF in any of my stores below:
Screen Shot 2022 01 20 at 10.40.01 AM 1

Purchase and Print

Get the ad-free, printable PDF with added extras in my pattern stores:

Pattern Notes

Work each US sc/UK dc in blo throughout.

Do not turn after every row, instead work every Row from RS – break yarn at end of each row and start with RS facing for next row.

Join new colour with a ss at start of each row.

Leave at least 18cm, (7in) tail at the end of each row to make the tassels.

Start with a multiple of 12 sts + 1 st for your first row.

close up of mosaic crochet blanket with diamond geometric design

How to Read a Mosaic Crochet Chart

I think that reading a mosaic crochet chart is one of the things that puts lots of people off trying this crochet technique.

In all honesty though, I can see why. It doesn’t really look anything like the finished pattern does and can look terribly complicated!

There are just a few simple rules to follow to make sure that you know how to read a mosaic crochet chart –

The chart is read from right to left for each row as numbered up the right hand side. Rows are worked in the colours as indicated on the left column.

The entire row is worked in the colour stated regardless of if there is a shaded box or not.

Ignore the colours displayed in each box; this shows how the pattern will look when you have added the dropped down stitches into the front loops 2 rows below.

You won’t change colour throughout a row.

A blank box indicates you will work a US sc/UK dc in the back loop only.

A box marked with an X indicates working a drop-down US double crochet/UK treble crochet.

Screenshot 2022 01 19 at 11.44.52

Adjusting the Blanket Size

The stitch repeat is a multiple of 12 + 1. To adjust the width just repeat stitches 2-13 as many times are you like.

The row repeat is from Row 3-14. To adjust the height just repeat these rows as many times as you like before completing with the final 3 rows as per the chart.

beginner mosaic crochet blanket over ladder

Diamond Mosaic Blanket Crochet Pattern

Standard UK Terms

Blanket

Make sure to break your yarn at the end of each row and begin the next row on the first st with the RS facing.

Work all dc stitches in the blo.

Using A, ch122.

Row 1 (RS): Using A, dc in second ch from hook and in each ch to end. [121 sts]

Row 2: Using A, ch1 (does not count as a st throughout), dc in each st to end.

Row 3: Using A, ch1, tr in flo of st 2 rows below, *dc in each of next 11 sts, tr in flo of st 2 rows below; rep from * to end.

Row 4: Using B, ch1, dc in first st, *tr in flo of st 2 rows below, dc in each of next 9 sts, tr in flo of st 2 rows below, dc in next st; rep from * to end.

Row 5: Using C, ch1, dc in first st, *dc in next st, tr in flo of st 2 rows below, dc in each of next 7 sts, tr in flo of st 2 rows below, dc in each of the next 2 sts; rep from * to end.

Row 6: Using D, ch1, dc in first st, *dc in each of next 2 sts, tr in flo of st 2 rows below, dc in each of next 5 sts, tr in flo of st 2 rows below, dc in each of next 3 sts; rep from * to end.

Row 7: Using E, ch1, dc in first st, *dc in each of next 3 sts, tr in flo of st 2 rows below, dc in each of next 3 sts, tr in flo of st 2 rows below, dc in each of next 4 sts; rep from * to end.

Row 8: Using F, ch1, dc in first st, *dc in each of next 4 sts, tr in flo of st 2 rows below, dc in next st, tr in flo of st 2 rows below, dc in each of next 5 sts; rep from * to end.

Row 9: Using A, ch1, dc in first st, *dc in each of next 5 sts, tr in flo of st 2 rows below, dc in each of next 6 sts; rep from * to end.

Row 10: Using F – As Row 8.

Row 11: Using E – As Row 7.

Row 12: Using D – As Row 6.

Row 13: Using C – As Row 5.

Row 14: Using BAs Row 4.

Rows 3-14 form the pattern.

Rows 15-146: Repeat pattern 11 more times.

Row 147: Using A As Row 3.

Rows 148-149: Using A As Row 2.

To Finish

Weave in all colour A ends.

To create the tassels, knot together the ends of each repeat of Rows 4-8 (all colours except A) and each repeat of Rows 10-14 (all colours except A). Once tied, measure and trim each tassel to 15cm (6in).

Purchase pattern option

Standard US Crochet Terms

Blanket

Make sure to break your yarn at the end of each row and begin the next row on the first st with the RS facing.

Work all sc stitches in the blo.

Using A, ch122.

Row 1 (RS): Using A, sc in second ch from hook and in each ch to end. [121 sts]

Row 2: Using A, ch1 (does not count as a st throughout), sc in each st to end.

Row 3: Using A, ch1, dc in flo of st 2 rows below, *sc in each of next 11 sts, dc in flo of st 2 rows below; rep from * to end.

Row 4: Using B, ch1, sc in first st, *dc in flo of st 2 rows below, sc in each of next 9 sts, dc in flo of st 2 rows below, sc in next st; rep from * to end.

Row 5: Using C, ch1, sc in first st, *sc in next st, dc in flo of st 2 rows below, sc in each of next 7 sts, dc in flo of st 2 rows below, sc in each of the next 2 sts; rep from * to end.

Row 6: Using D, ch1, sc in first st, *sc in each of next 2 sts, dc in flo of st 2 rows below, sc in each of next 5 sts, dc in flo of st 2 rows below, sc in each of next 3 sts; rep from * to end.

Row 7: Using E, ch1, sc in first st, *sc in each of next 3 sts, dc in flo of st 2 rows below, sc in each of next 3 sts, dc in flo of st 2 rows below, sc in each of next 4 sts; rep from * to end.

Row 8: Using F, ch1, sc in first st, *sc in each of next 4 sts, dc in flo of st 2 rows below, sc in next st, dc in flo of st 2 rows below, sc in each of next 5 sts; rep from * to end.

Row 9: Using A, ch1, sc in first st, *sc in each of next 5 sts, dc in flo of st 2 rows below, sc in each of next 6 sts; rep from * to end.

Row 10: Using F – As Row 8.

Row 11: Using E – As Row 7.

Row 12: Using D – As Row 6.

Row 13: Using C – As Row 5.

Row 14: Using BAs Row 4.

Rows 3-14 form the pattern.

Rows 15-146: Repeat pattern 11 more times.

Row 147: Using A As Row 3.

Rows 148-149: Using A As Row 2.

To Finish

Weave in all colour A ends.

To create the tassels, knot together the ends of each repeat of Rows 4-8 (all colours except A) and each repeat of Rows 10-14 (all colours except A). Once tied, measure and trim each tassel to 15cm (6in).

retro crochet blanket pattern with diamond detail

Other Crochet Blanket Patterns to Try

If you are looking for more fun crochet blanket patterns, check out this list!

If crochet blankets really are your things then you might also love to read my 6 Easy Crochet Blankets for Beginners post that takes you through all the aspects of blanket making you need to get started!

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