Know all about Gneiss and Blue Granite properties here. All properties of rocks are important as they define the type of rock and its application. Gneiss belongs to Metamorphic Rocks while Blue Granite belongs to Igneous Rocks.Texture of Gneiss is Banded, Foliated, Platy whereas that of Blue Granite is Phaneritic. Gneiss appears Foliated and Blue Granite appears Shiny. The luster of Gneiss is dull while that of Blue Granite is subvitreous to dull. Gneiss is available in black, brown, pink, red, white colors whereas Blue Granite is available in black, brown, light to dark grey, white colors. The commercial uses of Gneiss are cemetery markers, jewelry, tombstones, used in aquariums and that of Blue Granite are cemetery markers, commemorative tablets, creating artwork, curling.