Stitch pattern with shadow effect

It's Friday 13th and I submit 13th stitch pattern to my stitch pattern library. Isn't it a weird coincidence...

The diamond motifs created by slip stitches in this pattern are hardly noticeable if you look at the garment directly. But when you change the angle a bit – here they are – nicely shaped diamonds. Using this pattern in a garment is an invitation to play hide-and-seek – lots of fun. You will definitely attract attention in a sweater made with this pattern. For best result don’t use this pattern for the whole garment, use it as an accent.

Yarn shown in this swatch: Knitca Lovely 100% bamboo, color 0366 Apple Green.
Needles: US size 6 (4 mm).

Cast on a multiple of 10 stitches + 1 stitch at the end of the row.

Row 1 (right side): knit all stitches.
Row 2 (wrong side): purl all stitches
Row 3 (right side): * knit 5, slip 1 stitch knitwise, knit 4*, repeat from * to * as necessary.
Row 4 (wrong side): knit 1, *knit 4, slip 1 stitch purlwise, knit 5*, repeat from * to * as necessary.
Row 5 (right side): knit all stitches.
Row 6 (wrong side): purl all stitches
Row 7 (right side): *knit 4, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise, knit 3*, repeat from * to * as necessary.
Row 8 (wrong side): * knit 3, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 4*, repeat from * to * as necessary.
Row 9 (right side): knit all stitches.
Row 10 (wrong side): purl all stitches
Row 11 (right side): *knit 3, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise , knit 1, slip 1 stitch knitwise , knit 2* repeat from * to * as necessary.
Row 12 (wrong side): * knit 2, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 3*, repeat from * to * as necessary.
Row 13 (right side): knit all stitches.
Row 14 (wrong side): purl all stitches.
Row 15 (right side): *knit 2, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise, knit 1* repeat from * to * as necessary.
Row 16 (wrong side): * knit 1, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 2*, repeat from * to * as necessary.
Row 17 (right side): knit all stitches.
Row 18 (wrong side): purl all stitches.
Row 19 (right side): *knit 1, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise * repeat from * to * as necessary.
Row 20 (wrong side): * slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 1*, repeat from * to * as necessary.
Row 21 (right side): knit all stitches.
Row 22 (wrong side): purl all stitches.
Row 23 (right side): *knit 2, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise, knit 1 * repeat from * to * as necessary.
Row 24 (wrong side): *knit 1, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 2*, repeat from * to * as necessary.
Row 25 (right side): knit all stitches.
Row 26 (wrong side): purl all stitches.
Row 27 (right side): *knit 3, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise, knit 2 * repeat from * to * as necessary.
Row 28 (wrong side): *knit 2, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 3*, repeat from * to * as necessary.
Row 29 (right side): knit all stitches.
Row 30 (wrong side): purl all stitches.
Row 31 (right side): *knit 4, slip 1 stitch knitwise, knit 1, slip 1 stitch knitwise, knit 3 * repeat from * to * as necessary.
Row 32 (wrong side): *knit 3, slip 1 stitch purlwise, knit 1, slip 1 stitch purlwise, knit 4*, repeat from * to * as necessary.

Repeat rows 1-32 till necessary for completing your project.

You can also work according to the chart at http://www.knitca.com/slipstitch3.

Don’t forget to knit first and last stitch as selvage stitches if you want to make a nice-looking edge.