The hat is worked top down. You can use one color of yarn, two colors of yarn or three colors of yarn to crochet this hat. For this hat is better to use a stiff yarn to keep the shape of a hat.

Material and tools:
170g, 180 - 228m Any Worsted weight yarn only.
You can use any Worsted weight yarn of approx. 150 – 190m/100g.
120g for MC, 50g for CC.
Crochet hooks: G (4mm), D (3 mm) or size that gives correct gauge.
One acrylic strass (decorative stone or large button).
You can use multiple strands of the yarns to make up a single strand of Worsted weight of approx. 150 – 190m/100g.

Stitches and Abbreviations: (US terminology)
Chain - ch
Single crochet - sc
Slip stitch – ss
Back post single crochet – bpsc
Main Color – MC
Contrasting Color - CC