Microcline is a common, but not a well known mineral and has been used as a semi-precious stone under the names of Amazonite and Perthite. Amazonite is a variety that is deep blue - green and is suitable for carving and polishing. The perthite variety is stripped, the colored stripes are microcline and the white or clear stripes are a plagioclase feldspar. If the Plagioclase than microcline it is called "antiperthite". Twinning is common in all feldspars. At some localities fine amazonite clusters are intermixed with smoky quartz crystals and this results in an outstanding classic mineral specimen.
This specimen was part of the take in episode 5 2013 of the prospectors tv show. From the confetti pocket Smoky Hawk Claim Teller County, Colorado. It really does have the bright colors shown in these pictures. This specimen also has some nice Albite wafers.