Rare natural emerald crystal featuring a natural cave-like hollow formation, from the famous Swat Valley, Pakistan. The specimen weighs 8 grams and measures 16 × 13 × 12 mm. This emerald displays an unusual internal cavity/cave structure, formed naturally during crystal growth. The color ranges from light to vivid green, with translucent areas, internal zoning, and natural inclusions typical of untreated Swat emeralds. Such naturally sculpted forms are highly sought after by mineral collectors, as they clearly show geological formation processes rather than cut or polished enhancement. Details: Gemstone: Natural Emerald (Beryl) Origin: Swat Valley, Pakistan Weight: 8 grams Dimensions: 16 × 13 × 12 mm Color: Green Transparency: Translucent Formation: Natural cave / hollow crystal structure