Rough green and black mineral specimen

This is a rough, unpolished mineral specimen held in a human hand, displaying a predominantly dark green to black coloration. The surface features a distinctive pattern of lighter greenish-white circular or mottled spots, creating an appearance reminiscent of certain varieties of jasper, serpentine, or unakite. The texture appears somewhat waxy or vitrified in areas with natural fracture lines and rough edges typical of raw, unworked stone. There are no visible maker's marks, stamps, or labels on this natural object. The condition is raw and weathered, showing natural irregularities, pitting, and matrix variations consistent with unrefined geological samples found outdoors or in rough collections. Due to the limitations of visual identification from a single photograph without physical testing such as hardness or streak tests, the exact mineral composition remains unverified.

Based on what I can see in the provided photograph, this is a rough, unpolished mineral specimen displaying dark green to black coloration with lighter greenish-white mottled spots, resembling varieties such as serpentine or jasper. I cannot verify the exact mineral composition from a photo alone; physical testing such as hardness tests, streak tests, or microscopic analysis would be needed to confirm the material. The specimen is in a raw, weathered condition with natural irregularities and pitting. Assuming the working hypothesis that this is a collectible decorative mineral or lapidary rough of this general type, it would typically trade in a modest market range of $30 to $75, driven largely by decorative or metaphysical crystal appeal rather than precious gem value. General market demand for unrefined mineral specimens varies widely based on aesthetic appeal, size, and specific mineral identity. Without scientific testing and expert in-person examination, this valuation remains purely provisional. If further analysis reveals the specimen to be a common, low-value matrix rock rather than a desirable decorative mineral, or if it is an artificial replica, the value would likely drop to nominal specimen or landscaping rock value of under $15.