Rough Emerald Crystals

This lot consists of approximately 18 individual rough emerald crystals, displayed on a white paper surface with a handwritten annotation indicating a total weight of 115 carats. The gemstones exhibit a characteristic vibrant, deep green saturation typical of high-quality emeralds. Physically, the crystals display a variety of natural hexagonal prismatic habits, which is the standard crystal system for beryl. Sizes appear to vary from roughly 5mm to 12mm in length. The clarity ranges from translucent to semi-opaque, with visible internal inclusions, fractures, and 'jardin' (garden-like) patterns common in natural emerald specimens. Some crystals show flat basal pinacoid terminations, while others appear more fragmented or water-worn. Surface textures vary from shiny, glassy facets to duller, matted areas where host rock matrix or surface reach-in inclusions are present. Darker inclusions, possibly biotite mica or pyrite common in certain origins like Colombia or Zambia, are visible in several pieces. No evidence of oiling or resin treatment can be confirmed from the image alone, though such treatments are standard in the trade. The stones are in their natural, unpolished state, showing sharp edges and raw geological formations indicative of high-quality mineral specimens suitable for lapidary work or mineral collecting.

Based on my visual examination of these approximately 18 rough emerald crystals totaling 115 carats, I observed a range of saturation from medium-vibrant green to a deep, desirable forest green. The specimens exhibit the characteristic hexagonal prismatic growth habits of beryl. The presence of 'jardin'—internal fractures and inclusions–is consistent with natural emerald formation. Several pieces show sufficient size and clarity to potentially yield finished stones of 1–2 carats, which significantly elevates the value beyond simple mineral specimen grade. Market demand for high-quality rough remains strong, particularly for stones showing the specific saturation levels visible here, which are reminiscent of Colombian or Panjshir origins. Comparables for 'mine-run' parcel lots of this clarity and color typically trade between $40 and $60 per carat in the current wholesale market. The total valuation reflects the high yield potential of the larger crystals in the lot. However, this appraisal is subject to significant limitations. Without physical inspection, I cannot confirm the presence of clarity enhancements such as cedar oil or synthetic resins, which are industry standards but must be disclosed. Furthermore, origin cannot be definitively determined without spectroscopic analysis. A full authentication would require a refractometer test for refractive index, microscopic examination for diagnostic inclusion patterns (like three-phase inclusions), and Long Wave UV fluorescence testing. This value assumes the stones are natural emeralds without significant permanent glass or polymer fillings.