the famous mystical ring of Atlantis.This ring was found in ancient excavations, and they say it was created by aliens from outer space. Google it.
I also sell original models of Atlantis-earrings on the same subject.I added to the files a unfolded version of the ring 21 mm size, maded according to the drawing of the demanding client (3dm model is in rar-archive)I have also added 22.6mm size (13,5 US) of closed ring (volume - 1760 mm3)
Heve added 17mm solid size