BLACK DIAMOND UNCUT WHITE GOLD PURE CHALK - 24 KARAT CHALK.It might not be real gold, but the Black Diamond Uncut White Gold Pure Chalk is just as valuable to climbers. The 100% pure magnesium carbonate is the driest climbing chalk without any added drying agents. This chalk has no added chemicals that harm the environment or your skin. So take on the challenge, and keep your grip. FEATURESWhite chalk specifically blended for grippy, sweat-free climbingImproves grip for better climbing performanceNo added agents means it's among driest on market