Know all about Hawaiite and Slate properties here. All properties of rocks are important as they define the type of rock and its application. Hawaiite belongs to Igneous Rocks while Slate belongs to Metamorphic Rocks.Texture of Hawaiite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Slate is Foliated. Hawaiite appears Dull and Soft and Slate appears Dull. The luster of Hawaiite is not available while that of Slate is dull. Hawaiite is available in black, brown, light to dark grey colors whereas Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors. The commercial uses of Hawaiite are creating artwork, sea defence and that of Slate are blackboards, commemorative tablets, laboratory bench tops, standard material for the bed of billiard table, standard material for the beds of pool and snooker table, tombstones, used in aquariums, writing slates.