How to identify it?
Color
Orthoclase is usually colorless to white, greenish-white, grayish-yellow, or pale pink.
![](/wiki-image/1080/153965266114445344.jpeg)
Luster
Orthoclase has a vitreous luster when polished. Fractured surfaces have a pearly luster.
![](/wiki-image/1080/154007945204465695.jpeg)
Transparency
Orthoclase is usually transparent to translucent.
![](/wiki-image/1080/153740192648265743.jpeg)