Natural rough crystal specimen
Natural rough crystal specimen · Rough elongated crystal / Untrimmed octahedral habit with striations
Not applicable (Rough crystal form, unpolished) Cut
Carat
Estimated 4.50 to 6.00 carats based on visible dimensions
Color
Near-colorless to faint yellow tint (G-J range equivalent)
Clarity
Included / Industrial to promotional clarity (I2/I3 equivalent in rough form)
Shape
Rough elongated crystal / Untrimmed octahedral habit with striations
Overall Assessment
An authentic, untreated natural rough diamond crystal displaying classic geological features including striations and surface etching, primarily of interest to mineral collectors or as a specimen of natural carbon crystallization
Cut Quality
Not applicable (Rough crystal form, unpolished)
Brilliance
Low in rough form due to unpolished surfaces and heavy inclusion network
Fire
Minimal dispersion visible through rough outer skin
Scintillation
Absent prior to cutting and faceting
Proportions
Elongated tabular rough habit; proportions defined by natural crystallization rather than cut parameters
Symmetry
Natural crystal symmetry showing characteristic octahedral distortion and growth lines
Polish
Natural crystal faces with typical trigons, striations, and etching features
Fluorescence
Indeterminate from visual assessment alone, likely inert to moderate blue
Inclusions
Heavy internal feathers, clouds, mineral inclusions, and internal fractures visible throughout
Blemishes
Natural surface etch channels, trigons, pitting, and rough skin characteristic of alluvial or primary deposits
Origin
Likely primary kimberlitic or secondary alluvial origin (e.g., African or Canadian deposits)
Treatment Detection
No evidence of artificial treatments; completely natural untreated rough
Estimated Value
Nominal value as a mineral specimen or low-grade industrial/cutting rough; roughly $150 - $400 USD depending on specific weight and sawing potential
Certification Estimate
GIA or similar major lab would issue a rough diamond report or identification certificate
Investment Potential
Low investment potential for financial gain; more suited for mineral collectors and educational displays
Similar Diamonds
Typical run-of-mine industrial or low-clarity gem-quality rough crystals
Setting Suggestions
Best displayed raw in a custom wire-wrap pendant or organic bezel setting to preserve the natural crystal form
Care & Maintenance
Store separately to prevent scratching other stones; clean gently with warm soapy water and a soft brush, avoiding harsh acids or ultrasonic cleaners due to internal fractures
Interesting Facts
Displays clear growth lines (striations) perpendicular to the elongation, which are classic microscopic and macroscopic markers of natural diamond crystal growth