Here is a wonderful pattern I found a few years ago. Instructions are for Crochet (shown first) and also for Knitting (shown second). Works up quickly.
What you need
8 ounces each of 4 colors (your choice)Of Worsted Weight Yarn. For Crochet Afghan: J Hook.
For Knit Afghan: Size 10-1/2 knitting needles.
Gauge: For both knit and crochet afghan, 3 sts = 1 inc
Finished size is approximately 45″ x 68″
Gauge: For both knit and crochet afghan, 3 sts = 1 inch.
With darkest color, ch 158.
Row 1: Sc in 2nd ch from hook, skip one ch, *sc in each of the next 4 ch sts, 3 sc in next ch (point), sc in each of the next 4 ch, skip 2 ch *. Repeat between * across row. At end of row skip on ch only instead of 2 and sc in last ch. Ch 1, turn.
Row 2: Sc in last st of previous row (picking up both threads), skip 1 st, * sc in each of next 4 sts (picking up only the back thread of each st), 3 sc in next st (picking up both threads of the st), sc in each of the next 4 sts (picking up only back thread of each st), skip 2 sts *.
Repeat between * across row.
At the end of the row skp one st only and sc in last st picking up both threads. These 2 rows form a ridge. Repeat row 2 for entire afghan, changing colors after every 2nd row starting with the darkest shade and coordinate the shading according to your own taste. When you have 18 patterns in all, ending with darkest color, fasten off.
If you want to add fringe: Tassel Fringe – With the 4 shades of yarn, wind around a 6 inch cardboard twice. Using the dark shade of yarn double and about 10 inches long, tie the looped end of top tightly (leave ends to sew to point.) Cut lower end with scissors and remove cardboard. About 3/4 inches below, wind yard around tassel 3 times and tie tightly. Make 29 tassel in all and sew to each point on end of afghan.
Cast on 156 sts.
Row 1: Knit.
Row 2: *K2 tog, k4, yo, k1, yo, k4, k2 tog. Repeat from * across row.
Repeat these 2 rows for entire afghan, changing colors every 4th row (2 ridges). Fasten off. Sew in all ends neatly. Make tassels and sew to each point on afghan.
This Crochet Pattern was contributed by Annette