The Sunny Nero jewel is the result of the combination of quality, meticulous choice of materials and attention to detail. The three-dimensional cubes in silver color are alternated with spheres in faceted black glass. Simplicity and linearity are what inspired Cryady to create this jewel. Material: semi-natural alloy (aluminum, zinc magnesium) brass black glass steel Treatment: anti-allergic stain-resistant antique silver (no nickel)