These are acrylic stones from amusement prizes. Star-shaped Yellow Approximately 3g each, total weight 239g +A bonus item is included☻ Please note that these are amateur measurements, so there may be discrepancies. As these are amusement prizes, some may have scuffs or scratches. They can be used for treasure play, recreational goods, gem scooping, festivals, aquarium decorations, etc. Please be very careful as small children may choke on them.