Size: (1)about 9.5~10mm wide, 9.5~10mm long, 3.5~4mm thick. Quantity: about 30pcs each color, 240pcs totally. 8 Color: gray, steel blue, dark salmon, light salmon, silver, gold, purple, blue (2) about 10mm wide, 20~22mm long, 3mm thick, 50pcs/bag, 2colors, 1bag/color Material: Made of sturdy glass, durable, dustproof, these mirrors make a huge impact on various art craft and home decor projects, wall decals, and makes a great personalized gift! DIY Craft: Can add to picture frames, jewelry boxes, walls, mirrors, doors, lockers. Put together a DIY reflective mirror disco ball that can be adorned by etching, staining, and painting. Wide Usage: Mirrored glass tiles are ideal for all your artwork, craft, weddings, sewing, decorations and scrapbooking projects, or anything else you can think of. Also great for kids crafts, school art projects, holiday ornaments and seasonal decor.