I love, love, LOVE this flower. I came up with the pattern after looking at several items on Etsy. It's a pretty straight-forward pattern, with triple crochets.
They work out to be about 1.75 inches using size 10 thread and size 8 hook.
Ch 6. Sl st together to form ring
Row 1: Ch 3, 2 tr, ch 3, *3 tr, ch 3. Repeat from * 3 more times. Join with SC to top of CH 3.
Row 2: *Sc in next st (middle TR), (2 dc, 3 tr, {ch 3, sl st with first ch of ch3}, 3 tr, 2 dc) in the 3 ch sp; sc in next ch. Repeat from * 4 more times.
Finishing off: Instead of a sc in the very last ch, sl st, and fasten off.