Material: these flat marbles are made of plastic, not glass ! They have bright colors and smooth surface,no shape corner and looks sparkling. Size and Packaging: Each plastic flat marbles are 15mm/ 0.6 inch in diameter. They are very thin and weighlight, a little smaller than glass. Approx 625 - 635 pcs flat gemstones packed in a gift bottle, can fill 3 cups(720ml). Safety no broken(Acrylic Gems): These acrylic gems are plastic material and will not borken during transportation and using them.Also they will not fade and can be reused for many times. Party Decoration and Wide Application : These acrylic gems could be used as table scatter,confetti,home centerpieces,wedding table reception,room,kitchen bowl fillers.They are good accessory for art projects due to their smooth bottom surface and bright colors. Widely used for resin arts, diy painting,school teaching projects,photo props. any party decoration(such as bridal shower,baby shower,graduation,retirement,anniversary days,birthday,holiday and other theme events). Vase Fillers: These acrylic gems don’t float on the water even if light weight than glass material.Perfect for vase fillers, especially transparent vases, which can cover the roots and play a decorative role, very suitable for floral arrangement. You can even use them to decorate fish tanks, mason jars,sparking bottles,fountains,makeup brush holder fillers and any other occasion where need fillers and is exposed to the light. UPC 191814405065 ASIN B08T5YQV3F Size 15 MM/630PCS Color Pink Shape Round Brand Name HappyFiller Unit Count 14.0 Ounce Item Weight 0.87 Pounds Manufacturer HappyFiller Model Number AD-15-C Material Type Plastic Number of Pieces 630 Manufacturer Part Number AD-15-C