Riebeckite Quartz

Riebeckite-included quartz is an extraordinary variety of quartz, instantly recognized for its dramatic inclusions of riebeckite, a fibrous amphibole mineral that lends crystals a vivid internal character. Depending on concentration and orientation, the inclusions range in color from deep midnight black to luminous shades of blue, sometimes even within the same crystal. These inclusions form sprays, wisps, or concentrated zones, giving each specimen a unique and captivating appearance. The famous Zagi Mountain in Pakistan is celebrated as the world’s premier source of riebeckite quartz. Crystals from this locality exhibit exceptional clarity, with bold inclusions ranging from jet-black fibers to radiant blue tones that glow under light. Associations with aegirine and feldspar further enhance the visual impact of some specimens, making them stand out among inclusion minerals. With its rarity, striking color variations, and strong visual appeal, riebeckite quartz occupies a special place in advanced mineral collections. Whether displaying the intense depth of black inclusions or the vivid brilliance of blue, specimens from Zagi Mountain are regarded as the finest examples of this remarkable quartz variety.