Know all about Tephrite and Rapakivi Granite properties here. All properties of rocks are important as they define the type of rock and its application. Tephrite and Rapakivi Granite belong to Igneous Rocks.Texture of Tephrite is Aphanitic to Porphyritic whereas that of Rapakivi Granite is Granular, Phaneritic. Tephrite appears Vesicular and Rapakivi Granite appears Veined or Pebbled. The luster of Tephrite is subvitreous to dull while that of Rapakivi Granite is dull to grainy with sporadic parts pearly and vitreous. Tephrite is available in black, brown, colourless, green, grey, white colors whereas Rapakivi Granite is available in black, grey, orange, pink, white colors. The commercial uses of Tephrite are production of lime, soil conditioner and that of Rapakivi Granite are cemetery markers, commemorative tablets, creating artwork, curling, laboratory bench tops, tombstones.