Kira........river sand is just the finer particles of worn rock and such that as a rule built up in the bend of small creek and rivers. Around here it gotten by using a pump to "suck" it up, as you will, and when you see it being hauled it has a good bit of water running out of the truck going down the highway. It does tend to be courser and a different color than what you've probably seen most times. It's not the snow white color. Most I've seen has a pinkish to a brown red tone.
And for me to get a "load" here, I have to by a truck load and that equates to 17 tons. I saw a load advertised yesterday for $500.