The below measurements are approximate:
- The outer diameter measures 12.5mm tall and 11.6mm.
- The outer two gems measure 2mm in diamater
- The center gem measures 2.5mm in diameter
When opening seam rings for insertion it is
best to twist the two ends away from each other, rather than opening the
ring as one would do with a standard captive bead ring. The second
method will distort the shape of the ring.