Similar in texture to course sand, "gold dust" is how most gold is recovered. Contained in a small vial, gold dust may be purchased in increments of one gram, from 1 to 7 grams per vial. Gold dust is priced at market value for gold, multiplied by 72% to reflect this region's average "fineness" or purity of approximately 0,72, according to U.S. geologic and mineral surveys.