This stole was based on Eunny Jang's Print O' the Wave design, and modified with a razor shell border by Val Campion. Val has kindly transcribed the pattern for us, and our thanks go to her and Eunny.

Materials:
100g laceweight yarn; 4mm knitting needles

Abbreviations:

k2tog - knit 2 together;
k2togb - knit 2 together through back of loop
sktpo - slip 1 knitwise, k2tog, psso.
yo - yarn over needle

The stole is made up of two traditional patterns; Print o' the Wave and Razor Shell. The pattern in {} brackets is the razor shell edging, this is the same 2-row pattern throughout; the rest is the Print o' the Wave. Print o' the Wave is a multiple of 16 stitches + 16. There are 3 repeats + edging.

Instructions:

Cast on 90 stitches using a lace cast on (put needle into the loop of last stitch before making the next).

Row 1:
{k2, yo, k2, sktpo, k2, yo, k2, p2}.
k3, k2tog, k2, yo, k2tog, [yo, k2tog, yo, k1, yo, k2, k2togb, k3, k2tog, k2, yo, k2tog] x 3, yo, k2tog, yo, k1, yo, k2togb, k2
{p2, k2, yo, k2, sktpo, k2, yo, k2}

Row 2 and all wrong side rows:
k2, p to last two stitches, k2.

Row 3:
Work razor shell edging.
Then: - k2, k2tog, k2, yo, k2tog, yo, [k2tog, yo, k3, yo, k2, k2togb, k1, k2tog, k2, yo, k2tog, yo] x 3, k2tog, yo, k3, yo, k2togb, k1
Work razor shell edging

Row 5:
Work razor shell edging
Then: - k1, k2tog, k2, yo, k2tog, yo, k2tog, [yo, k5, yo, k2, sktpo, k2, yo, k2tog, yo, k2tog] x 3, yo, k5, yo, k2togb
Work razor shell edging

Row 7:
Work razor shell edging
Then: - k2, k2tog, yo, k1, yo, k2tog, yo, [k2tog, yo, k2, k2togb, k3, k2tog, k2, yo, k1, yo, k2togb, yo] x 3, k2tog, yo, k2, k2togb, k3
Work razor shell edging

Row 9:
Work razor shell edging
Then: - k1, k2tog, yo, k3, yo, k2togb, [yo, k2togb, yo, k2, k2togb, k1, k2tog, k2, yo, k3, yo, k2togb] x 3, yo, k2togb, yo, k2, k2togb, k2
Work razor shell edging

Row 11:
Work razor shell edging
Then: - k2tog, yo, k5, yo, [k2togb, yo, k2togb, yo, k2, sktpo, k2, yo, k5, yo] x 3, k2togb, yo, k2togb, yo, k2, k2togb, k1
Work razor shell edging

Repeat 34 times or until stole is the required length.

Cast off:
k2, *transfer the 2 stitches back to holding needle and k2togb, k1,*. Repeat from * to * until all stitches have been cast off. This gives a much looser edge than a conventional cast-off.

Finishing:
Soak in warm water and block.

You can see the Ravelry project page for this pattern here.