Abstract We have produced new ring- and tube-shaped crystals of NbSe 3 and found reproducible synthesizing conditions. We have confirmed that the ring is a single-phase NbSe 3 crystal from X-ray diffraction, and that a charge-density wave (CDW) transition takes place near 140 K by observing satellites of electron diffraction peaks. The position of the satellites coincides with that of the conventional NbSe 3 at the CDW transition. Non-linear conduction due to the CDW sliding is also observed in the ring crystals. The threshold field is similar to the conventional ribbon-shaped NbSe 3 crystals.