Rough, unsorted natural diamond crystal (or potentially a large crystalline quartz/glass simulant fragment, but evaluated as a rough diamond specimen based on context)
Rough, unsorted natural diamond crystal (or potentially a large crystalline quartz/glass simulant fragment, but evaluated as a rough diamond specimen based on context) · Rough crystal / Raw irregular fragment
Not Applicable (Uncut rough specimen) Cut
Carat
Estimated 15.0 - 25.0 carats based on visual proportions against human hand
Color
Near-colorless to light brown/grey tint (Approx. J-K range)
Clarity
Included (I1-I2 equivalent due to prominent internal fractures, feathers, and cloudiness)
Shape
Rough crystal / Raw irregular fragment
Overall Assessment
An interesting, substantial rough crystal specimen displaying natural characteristics, fractures, and irregular form. Recommended for specialized gemological testing to confirm identity, exact weight, and potential for cutting into a polished gem.
Cut Quality
Not Applicable (Uncut rough specimen)
Brilliance
Low to moderate due to rough surfaces and internal fracturing scattering light
Fire
Minimal dispersion observed in current raw state
Scintillation
Limited, patchy flash due to unpolished facets and irregular geometry
Proportions
Natural uncut morphology; depth and table percentages do not apply
Symmetry
Natural irregular symmetry characteristic of raw crystal growth
Polish
Raw, unpolished natural crystal faces with potential natural trigons or etching
Fluorescence
Indeterminate from visual inspection alone (requires UV lamp testing)
Inclusions
Feathers, fractures, internal carbon spots, and cloud-like inclusions visible
Blemishes
Natural surface pitting, rough skin, and possible natural indentations
Origin
Alluvial or primary kimberlite pipe deposit (Africa, Canada, or Russia traditionally)
Treatment Detection
No obvious signs of artificial enhancement; appears completely untreated and natural
Estimated Value
Variable based on actual weight and exact material verification; rough industrial-to-near-gem grade value
Certification Estimate
GIA or similar major lab (would receive a Rough Diamond Report or Identification Report rather than a standard grading report)
Investment Potential
Collector value primarily; high risk as an investment without professional certification and cutting potential analysis
Similar Diamonds
Other unpolished natural rough diamond octahedrons and irregular crystal fragments
Setting Suggestions
Wire-wrapped pendant, custom organic prong setting designed to preserve the raw stone's natural aesthetic
Care & Maintenance
Store separately to prevent scratching other items; clean gently with warm soapy water and a soft brush; avoid harsh ultrasonic cleaners due to internal fractures
Interesting Facts
Rough diamonds tell the geological history of the Earth's mantle, traveling hundreds of miles to the surface via explosive volcanic eruptions