Black Square Stone Box: Each box measures approximately 0.79 inches wide, 0.81 inches long, and 0.63 inches thick (20mm wide, 20.5mm long, 16mm thick), ideal for displaying and organizing small items like diamonds and jewelry. Transparent Window: The boxes include 20pcs in a set, features a clear acrylic lid for easy viewing of contents, approximately 0.57 inches x 0.57 inches (14.5mm x 14.5mm), ensuring your items are showcased attractively. Sturdy Material: Made from durable acrylic material with an elegant black finish, providing a sleek and modern appearance suitable for various display settings. Wide Application: Perfect for organizing jewelry, beads, gemstones, and other small crafts, these boxes provide a practical storage solution that keeps items organized and accessible Nice Gift: An excellent choice as a thoughtful gift for artisans, craft enthusiasts, and jewelry makers, offering a stylish and functional way to store and present handmade creations.