This KG Kurt Geiger Lucile Lace Up Gem sneaker is a chunky black style with crystal embellishment across the upper. The branding details are in a chic gunmetal and the exaggerated sole is in black rubber. This Lucile Lace Up Gem sneaker is a chunky black style with crystal embellishment across the upper. The branding details are in a chic gunmetal and the exaggerated sole is in black rubber.