Many stores offer silica sand for sale, including Home Depot, Wal-Mart, Amazon and Lowe's. Because of its wide variety of uses, package size availability varies by retailer.
Silica sand is one of the most common forms of sand. Comprised primarily of broken-down quartz, silica has smooth, rounded edges, making it ideal for a variety of projects. It is commonly used to make concrete, as filler in landscaping, in sand traps on golf courses, in filtration systems, in pet environments and in children's sandboxes. In recent years, large quantities of silica sand have been used by the fracking industry.
Since it is widely available, the size and type of the project should determine where to purchase this sand. Hardware stores like Lowe's, Home Depot and Ace Hardware sell larger bags for home improvement projects. Smaller quantities for art projects or pet environments can be purchased through Amazon, at Wal-Mart or even at craft and pet stores. Although available online, shipping fees associated with the sand can be excessive, and some sites recommend purchasing locally.