Natural (Rough Crystal / Alluvial Specimen)
Natural (Rough Crystal / Alluvial Specimen) · Rough Crystal / Uncut Elongated Octahedron Fragment
Not Applicable (Uncut Rough Specimen) Cut
Carat
Estimated 2.50 to 3.50 carats based on visual scale
Color
Estimated Light Yellow / Tinted (K-M range)
Clarity
Estimated Included (I1-I2)
Shape
Rough Crystal / Uncut Elongated Octahedron Fragment
Overall Assessment
This is a fascinating specimen of an uncut, natural rough diamond crystal showing characteristic alluvial wear, surface etching, and mineral inclusions, best preserved as a collector's specimen or used in organic, raw-style jewelry.
Cut Quality
Not Applicable (Uncut Rough Specimen)
Brilliance
Low to Moderate due to rough, unpolished faces and surface etching
Fire
Minimal dispersion observed through raw translucent areas
Scintillation
Limited, reflecting light irregularly from natural crystal faces rather than facets
Proportions
Natural Crystalline Proportions, Untouched by Faceting
Symmetry
Asymmetrical Natural Crystal Growth
Polish
Natural Rough Surfaces, Etch Channels, and Trigons
Fluorescence
Cannot be determined without UV testing (Likely Faint to Medium Blue if natural)
Inclusions
Abundant mineral inclusions, dark carbon spots, and internal feather fractures
Blemishes
Natural surface pitting, resorption scars, and rough skin textures
Origin
Alluvial deposit (river bed or secondary deposit), likely African or South American origin
Treatment Detection
No signs of artificial treatment; completely natural untreated rough stone
Estimated Value
USD 200 - USD 600 (Depending on industrial vs. mineral specimen collectible value)
Certification Estimate
GIA or local gemological laboratory report detailing rough weight and natural unheated status
Investment Potential
Low investment liquidity as a cut diamond, but moderate appeal for mineral collectors and custom organic jewelry designers
Similar Diamonds
Other alluvial rough diamond crystals of similar carat weight and clarity
Setting Suggestions
Raw mineral specimen mounting, bespoke organic wire-wrap, or custom prong setting designed to preserve the natural crystal form
Care & Maintenance
Store separately in a soft pouch to prevent scratching other softer stones; clean gently with warm soapy water and a soft-bristled brush
Interesting Facts
Rough diamonds often display curved faces and triangular etch markings called trigons due to natural dissolution processes during their ascent to the Earth's mantle