- Weight: 11-5/8 oz - Length: 3 cm - Height: 1 cm These are blue glass stones, often used as decorative elements. They are commonly utilized as aquarium gravel or pebbles in fish tanks and terrariums. They can also be used as vase fillers, in potted plants, or for various craft projects and home decorations. These polished glass stones have smooth edges, making them safe for use with aquatic life and plants. They are designed to be colorfast and durable, maintaining their appearance over time.