Clear quartz crystal cluster

This item is a mineral specimen featuring a cluster of translucent to transparent clear quartz crystals. The formation consists of multiple terminated points projecting outwards from a central matrix base, displaying natural prismatic crystal habits with striated faces. The color is predominantly clear to milky white, with some areas showing subtle yellowish or brownish matrix inclusions nestled between the crystal faces. Based on the visual characteristics, the specimen is consistent with natural quartz formations typically found in various global mining regions, though specific geological origin cannot be verified from the image alone. The user-supplied context states that this is a Madagascar clear quartz weighing approximately 630 grams and measuring 10x12 centimeters, but this user-attributed geographic origin and specific weight/dimension claim remain completely unverified by physical inspection. There are no visible maker's marks, stamps, or certificates of authenticity, and the identification is based purely on the visible crystal structure and mineral appearance. The overall visual condition appears unpolished and raw, showing typical natural growth irregularities, minor surface imperfections, and standard matrix contact points characteristic of an unworked mineral specimen.

Based on what I can see in the provided image, this mineral specimen features a cluster of translucent to transparent clear quartz crystals with natural prismatic habits and striated faces, appearing largely unpolished and raw. Per user submission: attributed to Madagascar origin, with a stated weight of approximately 630 grams and dimensions of 10x12 centimeters. I can't verify from a photo whether these specific geographic, weight, and dimension claims are accurate, nor can I definitively confirm the geological origin without physical inspection and advanced mineralogical testing. There are no visible maker's marks or certificates accompanying the piece. Assuming the owner's attribution regarding origin and material is correct, comparable raw quartz crystal clusters of similar visual quality and size generally trade within the estimated market range of $100 to $200, driven by steady demand among mineral collectors and home decor buyers. However, this valuation is strictly conditional; if the piece lacks the claimed geographic provenance, or if it turns out to be a treated, synthetic, or artificially enhanced substitute rather than natural quartz, the market value would decrease significantly, likely falling into the $30 to $60 range. To establish a more precise evaluation and support the assumed identity, I would need physical inspection, specialized gemological or mineralogical testing, and professional verification of the specimen's source.