I was playing with stick pins today and made this. Pins are from Joann's floral section. They had pins on the bridal section too, but they were shorter. I also saw tear drop shaped ones there before, but the quality wasn't great. Lot's of excess on the pin which means sanding the pins to get the first bead flush against the top.
I was really happy to find these. They are 3-1/16" long and really substantial. Top is 6mm.
I will definitely be making more of these.