TAST stitch 102 is beaded triangular buttonhole stitch. TAST stands for Take A Stitch Tuesday, an embroidery challenge at Pin Tangle.
I used this stitch to decorate a seam on block 4 for my Crazy White quilt. I added slipped detached chain stitches and detached chain stitches in the valleys of the triangles. The threads are perle 8 and cotton a broder. Just click the photo to take a closer look at my stitches.