? How to Choice: Small crystal stones is 6-9mm (0.25?-0.35?), 0.93LB/Pack, about 0.3 liter capacity. For example, if your tank size is 6.3* 6.3", it will needed 1 bags for about 0.4? of depth. ? Features: The glass gemstone is like river gravels, no dye or other methods of artificial coloring is used, never faded. Smooth edges no harm to animals and plants, you can rest assured that using. NB the glass pebbles are 0.93LB Heavy Enough BUT SMALL BAG! ? Excellent Quality: Glass beads are made of great quality glass materials fired at high temperature. Sturdy and durable, environmentally friendly, lead-free, non toxic and odorless. ? Wide Application: Perfect for aquarium, potted plants pots,swimming pool,gardening, home and crafts decorations.You can use it to DIY ornament, make a birthday gift to your friends or family. ? After-Service: 24-hour online service support, 30 days unconditional refund. If you have any questions, please feel free to contact us and we will solve it ASAP. Product Description Fish Tank Aquarium Glass Rocks Natural Material: Non-toxic and safe just like river gravels. Since no dyes, natural color won't fade away through time. Best Gift: Small aquarium pebbles means good luck, as Birthday, Christmas gift to express your love and blessings. Useful Decorative Helper: Build a natural and shining looking for home of you and your de-lovely. Excellent for fish, succulent plant. Wide Applications: Perfect for aquarium decoration, fish tank decoration, garden decoration, vase filling, wedding. NB the glass pebbles are 0.93LB Heavy Enough BUT SMALL BAG! Good Small Crafting Stones Product Size: Each clear pebbles about 6 to 9mm/0.24-0.35" Package Weight: About 0.94LB (420g) Assorted Colors: Sea Blue/Light Blue/ Green/ Amber/ Rainbow High Quality Material Our fish tank beads made of great glass material, safe and non-toxic. Never cause harm to animals and plants. Excellent Craftsmanship Aquarium marble is finely ground with a smooth edge, processed into irregular shape with top-class technique. DIY Decorations for Vases These reusable glass stones are a perfect fit for floral displays while serving the purpose to holding stems in place.