No reserve price - 1 pcs Grey, Brown Quartz - 264.56 ct - International Colored Gemstone Association (ICA GemLab)

Quartz is one of the most abundant and varied minerals found on Earth, with colors and types spanning a wide spectrum. The grey and brown varieties of quartz offer unique, earthy tones that appeal to collectors and jewelry makers alike. Quartz crystals typically form in igneous, metamorphic, and sedimentary environments, commonly emerging as well-formed hexagonal prisms. A specimen weighing 264.56 carats indicates a notably large and impressive piece, suitable for cutting into multiple gems or serving as a statement mineral specimen. The color variations of grey and brown quartz arise from natural inclusions and trace elements within the crystalline structure. This quartz comes with certification from the International Colored Gemstone Association (ICA GemLab), ensuring its origin and authenticity. Grey quartz hues range from smoky to subtle translucent shades, while brown quartz, often referred to as smoky quartz or champagne quartz, brings warm and versatile colors. Quartz ranks 7 on the Mohs hardness scale, making it durable for various ornamental and practical uses. Beyond its aesthetic appeal, quartz plays an essential role in industrial applications due to its piezoelectric properties and chemical stability. Collectors prize large, well-formed quartz crystals for their natural beauty and rarity, particularly when colors present unusual and attractive tones.