Natural rough diamond crystal
Natural rough diamond crystal · Rough crystal / Irregular octahedral fragment
Not Applicable (uncut rough crystal) Cut
Carat
Estimated 0.85 - 1.20 carats based on visual volume
Color
Near-colorless to very faint brown/pinkish hue (approx. G-I range)
Clarity
Included (I1-I2)
Shape
Rough crystal / Irregular octahedral fragment
Overall Assessment
This is a fascinating specimen of an untreated, natural rough diamond crystal displaying characteristic growth lines and inclusions. While not suitable for high jewelry in its current state without significant cutting and polishing yield loss, it makes an exceptional geological specimen or a unique raw-stone jewelry piece.
Cut Quality
Not Applicable (uncut rough crystal)
Brilliance
Low due to rough, uncut state and internal inclusions
Fire
Minimal in current rough state, requires faceting to express optical dispersion
Scintillation
Limited flash effect primarily from natural crystal facets and fracture planes
Proportions
Uncut crystal; non-standard dimensional proportions
Symmetry
Natural asymmetrical crystal growth
Polish
Natural crystal faces (trigons and growth lines visible)
Fluorescence
Indeterminate from visual inspection (typically Medium Blue in natural roughs)
Inclusions
Heavy internal clouding, feather fractures, dark carbon spots, and internal inclusions visible
Blemishes
Natural surface pitting, trigons, and rough skin textures
Origin
Likely alluvial deposit origin (Africa, South America, or Russia)
Treatment Detection
No treatments detected; entirely untreated natural rough diamond
Estimated Value
300 - 800 USD (rough specimens vary widely based on yield potential upon cutting)
Certification Estimate
GIA (Gemological Institute of America) or local lab for rough certificate
Investment Potential
Low-to-moderate; primarily valued as a collectible mineral specimen rather than an investment gem
Similar Diamonds
Natural uncut industrial-grade or low-clarity gem-grade rough diamond octahedrons
Setting Suggestions
Raw uncut diamond pendant necklace in yellow gold or platinum prong setting
Care & Maintenance
Clean gently with warm soapy water and a soft-bristle brush; store separately to avoid scratching other items
Interesting Facts
Rough diamonds display natural growth marks called trigons (triangular indentations) formed deep within the Earth's mantle under extreme pressure and temperature