The orthose belongs to the family of the potassium feldspars.
Some people orthoses of big purity can be cut. They are of colorless color in yellow, yellow pinkish. Large-dimension, very pure, yellow specimens were found in Madagascar.
The orthose, as all the feldspars is one gemstone of average hardness. It can be used in jewelry(jeweler's store) but by watching to plan a frame which protects the stone.
To know more about the mineralogy of Orthose ( Orthoclase), see Mindat.org->
