Earth Resources- Aggregate Quantity in Basket: none Code: esaggregate Price: $14.00 Shipping Weight: 1.00 pounds Quantity: Learn how local rocks are used in local industries to create roads, sidewalks, patios and more. Kit includes samples of red lava, black lava, black and white, flagstone, dolomite, road aggregate, pea gravel, slate, feather rock, and rhyolite.