Moonstone (iridescent peristerite-oligoclase feldspar) (Chupa Pegmatite Field, Mesoproterozoic, 1.75 to 2.10 Ga; at or near Chupa Bay, northwestern Karelia, far-nw Russia) by James St. John, on Flickr
Translucent White Adularescent Feldspar Specimen from Russia
Moonstone (iridescent peristerite-oligoclase feldspar) (Chupa Pegmatite Field, Mesoproterozoic, 1.75 to 2.10 Ga; at or near Chupa Bay, northwestern Karelia, far-nw Russia) by James St. John, on Flickr
Article: Peristerite Value, Price, and Jewelry Information
Credit: by James St. John, on Flickr
| Gemstone | Feldspar, Peristerite, Albite |
| Natural or man made | Natural |
| Origin | Russia |
| Origin details | Chupa Pegmatite Field, Mesoproterozoic, 1.75 to 2.10 Ga; at or near Chupa Bay, northwestern Karelia |
| Gem State | Specimen |
| Color | White |
| Transparency | Translucent |
| Photo phenomena | Adularescence, Iridescence |