Bit blurry but this photo shows the yarn colour the best. It's Sheila's sock yarn by Fyberspates in their Cherry colourway.
The radiating rib starts on the palm side and then joins up at the back. Very straight forward to knit but a lovely effect. Plus the ribbing means that it fits a range of hand/arm sizes. Perfect for gifting, provided you leave enough time to knit them up ;-)
Pattern is Marywarmers by Lisa Reeve and is a free one on Ravelry. It took less than a skein of yarn to make both wrist warmers.