Anatometal

“Our King Ends are available in solid 18k yellow, rose, or white gold and in either the Threaded or Threadless variety.

Available with 3mm to 8mm stone version also available.
All of our gemstones are high quality lab made synthetic stones. Each gemstone is hand set into and guaranteed for a lifetime.
We do not use stones that contain lead.” – Anatometal

This one is 3.5mm stone, 16ga thread.