Know all about Hawaiite and Oil shale properties here. All properties of rocks are important as they define the type of rock and its application. Hawaiite belongs to Igneous Rocks while Oil shale belongs to Sedimentary Rocks.Texture of Hawaiite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Oil shale is Splintery. Hawaiite appears Dull and Soft and Oil shale appears Muddy. The luster of Hawaiite is not available while that of Oil shale is dull. Hawaiite is available in black, brown, light to dark grey colors whereas Oil shale is available in black, brown, buff, green, grey, red, yellow colors. The commercial uses of Hawaiite are creating artwork, sea defence and that of Oil shale are an oil and gas reservoir.