Rainbow Quilt Block of the Month Block Six

Welcome back to the Rainbow Quilt Block of the Month designed by Janome Maker Carolina Oneto!This month you will make Block Six. The Diamond Block, is a block that is perfect for practicing your half square triangle skills!  Get ready to have fun! 




Remember that all the blocks will have a finished size of 12” and the unfinished size will be 12 1/2”. All seams are ¼”.  Please read through all of the instructions prior to starting this block. Carolina sews on the Janome 1600P-QC that makes piecing and quilting effortless with an extra-wide work area, side loading bobbin for easy access, and an automatic thread cutter! 


White background

Three 5 3/4” squares

Two 4” square


One 5 3/4” square

One 4” square

Dark pink

One 5 3/4” square

One 4” square


One 5 3/4” square

INSTRUCTIONS for making HST four at a time:

  • Make four half-square triangles.
  • Place a white and colored fabric square (5 3/4”) right sides together.
  • Sew a 1/4″ seam allowance all around the perimeter of the square.
  • Make two diagonal cuts and press each piece open to one side.
  • Trim away the dog ears using a square quilting ruler, you will obtain 4 HST 3,5”


Instructions for making HST two at a time

Do this process with the 2 white squares of 4” and the two squares of the same size in pink and dark pink. You will assemble 8 half-square triangles that you must square up to the size of 3.5".


















  • Arrange your blocks in correct layout
  • Using a quarter-inch seam allowance, sew together in rows. Join all rows, using a ¼” inch seam allowance.
  • Press your completed block and trim down to 12.5″ square (if necessary).



You can find the past blocks by visiting:


Block One     HERE

Block Two     HERE

Block Three  HERE

Block Four    HERE

Block Five     HERE




After you make your block, we’d love to see them!

Janome Sewing Classroom

Janome America Instagram – Be sure to tag @janomeamerica and use the hashtag #janomemakes and also tag @carolinaoneto!






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