While touted as a more "natural form" of sugar, evaporated cane juice sugar is simply another form of granulated sugar. This sugar is technically less processed than regular granulated sugar but from a nutritional standpoint there is little difference. You can purchase this product in health food stores; Bob's Red Mill is one good brand.
Williams Sonoma sometimes carries these sugar crytsals You can also buy it online at Amazon.com. Organic Whole Cane Sugar Crystals