Know all about Jasperoid and Tephrite properties here. All properties of rocks are important as they define the type of rock and its application. Jasperoid belongs to Sedimentary Rocks while Tephrite belongs to Igneous Rocks.Texture of Jasperoid is Earthy whereas that of Tephrite is Aphanitic to Porphyritic. Jasperoid appears Glassy or Pearly and Tephrite appears Vesicular. The luster of Jasperoid is vitreous and pearly while that of Tephrite is subvitreous to dull. Jasperoid and Tephrite are available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Jasperoid and Tephrite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo).