A Waft of Grey #3 is medium-dark,c harcoal gray with silver sparkle and shimmer. It was very, very dry and stiff to work with, so the color payoff when applied dry was barely-there. Applied with a dampened brush, I was able to get semi-opaque color coverage. MAC A Sprinkle of Blues #4 (P, $21.00) is a little darker and not as sparkly (but they are similar). Makeup Geek Galaxy (P, $5.99) is less sparkly. MAC Thunder and Rain #1 (LE, $21.00) is cooler-toned. MAC Diesel (LE, $15.00) is darker. Giorgio Armani #21 (LE, $33.00) is similar. See comparison swatches.
The Mineralize Eyeshadow formula is supposed to have "low-to-medium coverage" when applied dry and "more intense coverage and color" when used wet. Most shades have color payoff that is true to the brand's description: semi-sheer to semi-opaque when used dry and semi-opaque to opaque when used with a dampened brush. I tend to find that they apply more smoothly and evenly with a more metallic finish with a dampened brush as well. Some shades can be a little too dry or dusty and do not apply as well with a dry brush. The wear is typically a bit less than average on me--six to seven hours.