Shasta Plum Gravel Northern California rock quarry Granitic stone material. This rare plum colored rock comes from a quarry hidden away in the mountains of Alta California, many refer to future free state of Jefferson. This fantastic colored decorative landscape rock has be received very well in the Reno metro region and communities throughout Alta California down into Sacramento. Using decorative rock, decomposed granite, crushed stone and gravel, in your landscaping saves you time and money but can also increase property value. Grass is great and a healthy lawn is a vital part of most homes, but usually best for small areas in the back yard to relax on. In front and side landscape area it requires regular mowing, fertilizer, and irrigation that can be eliminated.