Yarn: Light worsted or DK
Sized for Women's hand small
Needles: Size 5 double pointed needles, for larger sizes increase needles and yarn appropriately
Mitered Diamond based on 25 stitches = 3.5" diagonally or 2.5" on a side. See this post for mitered diamond/squares directions.
Crochet Cast-on See this video
For demo purposes these different colors will help to show the two sides of the top diamonds. It might help to make a similar sample to test gauge and to experience the technique.
Any questions? Email me