Know all about Essexite and Tephrite properties here. All properties of rocks are important as they define the type of rock and its application. Essexite and Tephrite belong to Igneous Rocks.Texture of Essexite is Granular whereas that of Tephrite is Aphanitic to Porphyritic. Essexite appears Banded and Tephrite appears Vesicular. The luster of Essexite is not available while that of Tephrite is subvitreous to dull. Essexite is available in dark grey to black colors whereas Tephrite is available in black, brown, colourless, green, grey, white colors. The commercial uses of Essexite are cemetery markers, commemorative tablets, jewelry, sea defence, tombstones and that of Tephrite are production of lime, soil conditioner.