Natural rough diamond
Natural rough diamond · Rough crystal / Octahedral fragment
Rough / Uncut Cut
Carat
Estimated 0.50 - 1.00 carats (uncut matrix)
Color
Natural yellowish-brown or coated with iron oxide staining
Clarity
Not fully determinable in rough form; likely includes internal inclusions and natural feathers
Shape
Rough crystal / Octahedral fragment
Overall Assessment
An interesting natural rough diamond specimen embedded in its host matrix, preserving its raw geological state prior to any human lapidary intervention.
Cut Quality
Rough / Uncut
Brilliance
Low to moderate due to rough, unpolished surface preventing internal light return
Fire
Minimal visible fire prior to cutting and faceting
Scintillation
Limited flash effect from natural crystal faces rather than precision-cut facets
Proportions
Natural uncut geological formation with irregular depth and angles
Symmetry
Natural crystal symmetry (distorted octahedral/dodecahedral habits)
Polish
Raw, unpolished natural crystal faces (trigons potentially present)
Fluorescence
Unknown without UV testing (typical rough may show inert to moderate blue)
Inclusions
Possible carbon spots, mineral inclusions (olivine, garnet), and internal feathers typical of rough stones
Blemishes
Natural surface pitting, rough skin, and iron-staining (matrix attachment)
Origin
Primary alluvial or kimberlite pipe deposit (indicative of natural rough extraction)
Treatment Detection
None detected; appears entirely untreated and straight from the matrix rock
Estimated Value
Varies widely based on industrial vs. gem quality; rough specimens of this size range from $100 to $500 depending on clarity once cut
Certification Estimate
GIA or EGL (requires extraction, cleaning, and professional grading after cutting)
Investment Potential
Collectible as a raw mineral specimen; moderate investment value depending on potential cut yield
Similar Diamonds
Unaltered alluvial rough diamonds from African or Canadian primary deposits
Setting Suggestions
Raw uncut diamond jewelry using bezel settings or organic-style prong settings in yellow gold or platinum
Care & Maintenance
Clean gently with warm soapy water and a soft brush; avoid harsh acids that could damage surrounding matrix
Interesting Facts
Rough diamonds often display triangular growth markings called trigons on their natural crystal faces