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