Know all about Tephrite and Hyaloclastite properties here. All properties of rocks are important as they define the type of rock and its application. Tephrite and Hyaloclastite belong to Igneous Rocks.Texture of Tephrite is Aphanitic to Porphyritic whereas that of Hyaloclastite is Pyroclastic. Tephrite appears Vesicular and Hyaloclastite appears Dull. The luster of Tephrite is subvitreous to dull while that of Hyaloclastite is dull and grainy. Tephrite is available in black, brown, colourless, green, grey, white colors whereas Hyaloclastite is available in brown, grey, yellow colors. The commercial uses of Tephrite are production of lime, soil conditioner and that of Hyaloclastite are cemetery markers, creating artwork.