This Mini Cube Set, Rock Collection, is from Altenew. This set features the colors limestone, silver stone, industrial diamond, and pure graphite. This is a water-based, fast-drying ink that is great for stamping, watercoloring, and layered stamping. This formula reduces the risk of smudging. This ink will provide uniform coverage on stamps. This ink will leave a vibrant impression on your projects. These ink pads feature a raised felt pad that is refillable with the Altenew Re-inkers (sold separately). The ink cases measure 1.3" x 1.3".