sand - single tube of any sand we have in stock - make your own set at $2.70 per tube. Five sand types are shown

From left to right, the sands shown here are angular quartz sand from Zuma Beach, California, iridescent angular black sand from a lava flow at Kalapana, Hawaii, orange frosted-grain aeolian sand derived from the Navajo Sandstone in Utah, a heterogeneous glacial sand from Dorr Skeels Lake, Montana, and olivine sand from Hawaii. You can make up your own set by selecting any sand that we offer at $2.70 per tube The tubes are16 ml each, optically clear polystyrene with screw caps. The plastic tubes are practical in a classroom and are somewhat student resistant, though a cap can be unscrewed. Good for student examination. Each sand has a data card with it. We currently have these sand types in stock: 1. orange pink dune sand derived from the Navajo Sandstone in Utah  2. yellow brown dune sand derived from a sandstone member in the Menefee Formation, New Mexico 3. green sand, 75% olivine and 25% coral from South Point, Hawaii  4. chocolate brown beach sand, Rockaway Beach, California, pr