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It seems like you are describing a type of material, possibly a stone or marble with a distinctive appearance. The description mentions an "intense, deep grey" color, along with "pale yet bold vein patterns." This suggests a visually striking surface, commonly used for luxury finishes in architecture or design, such as countertops, flooring, or wall cladding. The mention of a "glossy sheen" implies it has a polished surface, enhancing its aesthetic appeal and perhaps also its durability. If you have any specific questions or need further details, feel free to ask!