Austrian Crystal Nose Ring. This Bioplast Nose Ring is a timeless and classic nose jewelry item. Add some fun with this Press Fit Gem Austrian Crystal Nose Screw Ring. The Flexible Bioplast Nose Ring is both comfortable and colorful.. Specifications: 18 Gauge (1mm), 1/4" (6 mm) Length, Bioplast Nose Screw, 1.70mm Press Fit Genuine Swarovski® Crystal. (Swarovski is a registered trademark of Swarovski AG)