From the Knit Rowan website:
Crochet this women’s openwork vest from the Silkystones Collection, designed by Marie Wallin using the delightful yarn, Silkystones (silk and linen). With a central motif on back and front and openwork stitches surrounding the motif and a scoop neck, this crochet pattern is suitable for the experienced crocheter.

Finished width dimensions:
47: 51.5: 58.5: 63.5: 70.5 cm
18.5: 20.5: 23: 25: 28 inches

Yarn Information:
Photographed in Pampas 082
6, 6, 7, 8, 9 skeins
654, 654, 763, 872, 981 yards

Gauge notes:

• 22 stitches to 13 cm across, and 4 rows to 9 cm high over mesh pattern using smaller crochet hook.
• Completed motif measures 34 cm squares using larger crochet hook.