RONJA Eyeglasses by Gotti. Color: Ash, Mocca, Moss, Sand, Teal, Plum, Size: 56-16, Material: 3D Sintered, Collection: Gtti Dimension.. The RONJA is soft and feminine with a rounded cat-eye shape. The frame is made from 3D-printed polyamide with a matte finish. Light on the face, the RONJA provides an elegant touch with a playful twist. The lines are smooth yet easy to wear every day. Swiss-made stability allows the frame to feel light and seamless. RONJA eyeglasses are designed for someone who prefers gentle curves with comfort and understated style.