You will need:

• Cotton yarn: I used Alize Bahar (grey and jade colors)
• Hook: 3.0mm
• Zipper
• Needle for sewing the zipper

Abbreviations:

• sc - single crochet
• inc - increase (two single crochet in the same stitch)
• (..) - represents the sequence that will repeat
• x and number - the number of times to repeat a sequence
• [..] - the number between square brackets is the number of loops at the end of row

Notes:

The pattern is written in US terminology.

Wallet:

Start with grey color and make a chain of 28

Row 1: 26sc, inc, 26sc, inc

Row 2: inc, 26sc, inc, inc, 26sc, inc

Row 3: Take out the hook from last grey chain and add a stitch marker to make sure the stitches don't get unravel.
Attach jade color on the next stitch with a sc.

This row will be worked with 'special' sc stiches. Insert hook into the base of next stitch (not into the top loop of the stitch, like you would for a regular sc). This will wrap your sc over the previous round.

Make two sc in the same stitch - to form a 'diamond'
Skip the next stitch and then make two sc into the next one.
Repeat this until you reach the end of the row.

Row 4: with grey color, make one row of regular sc stitches

Next, repeat the following sequence:
- with jade color, make one row of: two special sc stitches in the same stitch, skip one stitch
- with grey color, make one row of regular sc stitches
Do this up until you have 12 rows of jade diamonds.

Cut the yarn for the jade color.
Make one more row of sc stitches using the grey color.
Cut the yarn for grey color also and hide tails.

Attach zipper:

Take the zipper and manually sew it on the wallet. Use the last row and insert needle in each stitch.