Thomas Sabo Sterling Silver Collection Black Mix of Cubic Zirconia Shapes Pendant The Mix matched shapes and different sized black cubic zirconias stones plays with light and dark accents on a contrasting, bright 925 Sterling silver necklace. Find the matching Earrings to complete this look. The perfect fashion accessory for a special occasion or just to jazz up an old outfit for a date with friends. Match this perfectly with our Thomas Sabo black cubic zirconia mixed shape earrings.