This remarkable specimen from Zagi Mountain in the Peshawar District of Pakistan features a striking example of riebeckite included blue quartz, accompanied by a cluster of well-formed aegirine crystals. The quartz crystal exhibits an elegant, elongated form and assumes a rich, saturated blue hue when viewed under light, an effect attributed to fine riebeckite inclusions dispersed throughout the crystal. This optical phenomenon gives the quartz a deep, almost ethereal glow, elevating both its beauty and rarity.

Positioned at one end of the matrix, the quartz contrasts beautifully with the opposite side, which is densely covered in sharp, black-green aegirine crystals. This unusual and dynamic arrangement creates a visually compelling balance and enhances the specimen’s aesthetic appeal. The riebeckite, a magnesium-rich amphibole, subtly alters the quartz’s coloration due to its fine internal dispersion, and such inclusions are highly prized for their rarity and visual effect.

Measuring 11.5 x 4.5 x 4 cm and weighing 280 grams, this cabinet-sized specimen offers a unique combination of color, form, and mineralogical significance. The quartz crystal itself measures 5.5 x 5 x 4.5 cm and is in excellent condition. Altogether, this is a superb and collectible piece that showcases the fascinating interplay of mineral chemistry and aesthetics in one of the more distinctive combinations found in Pakistan.