Know all about Diabase and Nephelinite properties here. All properties of rocks are important as they define the type of rock and its application. Diabase and Nephelinite belong to Igneous Rocks.Texture of Diabase is Aphanitic, Granular whereas that of Nephelinite is Aphanitic. Diabase appears Vesicular and Nephelinite appears Skeletal. The luster of Diabase is not available while that of Nephelinite is vitreous to metallic. Diabase is available in dark grey to black colors whereas Nephelinite is available in black, brown, colourless, green, grey, white colors. The commercial uses of Diabase are an oil and gas reservoir, cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo).