This is the 72 or 73 bead heart that's often encountered in Japanese publications and on the Web. I like to think my color-coded thread paths, diagrams and step-by-step instructions are easier to use.
My heart from pattern #9426 is shown on the right for comparison purposes.
Pattern also includes instructions for two types of bail, how to do crossweaving, and how to tie a concealed knot.
Includes a single-needle workaround.
About 1 inch or 1.25 inch, depending on size of beads used