Just finished this little heart with its 50 beads. I've made this several other times before and tucked it into a card for a 50th anniversary. People enjoy getting it. I'm giving this one this weekend to Roy & Sally.
The pattern is called: Small Tatted Heart. It's designed by Betsy Evans and the pattern can be found at:
http://www.rexie.com/Rexie/Betsy_Evans.html
I have beads on all but 2 of the open (those that aren't used for joins) picots in the pattern. The thread I used is a vintage size 30 Clark's O.N.T. I 'm still using this thread, one from a basket of vintage threads I bought several years ago at an antique shop. As a tatter, I thought it quite the find. I'd make a similar purchase again, given the opportunity, as the thread was in good shape and clean. I've had no trouble using it to tat with.