Natural diamond in rough crystal form
Natural diamond in rough crystal form · Rough octahedron or irregular crystalline form
Not applicable (Rough, unpolished crystal) Cut
Carat
Estimated 2.5 - 3.5 carats
Color
Near-colorless to faint yellow/brown tint
Clarity
Included (I1-I2)
Shape
Rough octahedron or irregular crystalline form
Overall Assessment
An intriguing natural diamond crystal specimen showing characteristic rough texture, ideal for custom lapidary work or mineral collection
Cut Quality
Not applicable (Rough, unpolished crystal)
Brilliance
Low due to lack of faceting and rough exterior
Fire
Minimal to none in current rough state
Scintillation
Poor as light does not enter and reflect internally as faceted stones do
Proportions
Natural crystal habit with distorted faces
Symmetry
Natural crystal symmetry showing octahedral growth lines
Polish
Natural unpolished crystal faces (trigons and surface texture visible)
Fluorescence
Unable to determine visually without UV testing
Inclusions
Cloudy internal regions, feathers, and potential carbon spots
Blemishes
Natural surface etchings, trigons, and rough skin
Origin
Likely alluvial or primary pipe deposit (e.g., South Africa, Canada, or Russia)
Treatment Detection
No signs of enhancement; completely untreated rough stone
Estimated Value
Depends heavily on yield after cutting, approximately $1,500 - $3,000 as a rough specimen
Certification Estimate
GIA rough diamond report or Kimberley Process certificate of origin
Investment Potential
Moderate to high for collectors of rough minerals or custom cutters seeking high yield potential
Similar Diamonds
Other industrial or gem-grade rough diamond octahedrons of comparable size
Setting Suggestions
Best left as a raw specimen jewelry piece in a custom bezel setting, or cut and polished into a modern brilliant shape
Care & Maintenance
Store separately to avoid scratching other gems, clean with warm soapy water and a soft brush
Interesting Facts
Rough diamonds retain their natural geological history, often showing growth lines called trigons on their faces