Not a diamond (appears to be a rough quartz, quartzite, or mineral aggregate)
Not a diamond (appears to be a rough quartz, quartzite, or mineral aggregate) · Rough / Uncut / Natural pebble
Not applicable (uncut raw stone) Cut
Carat
Not applicable (rough mineral specimen, visually estimated over 50 carats in total mass)
Color
Mottled grey, white, and brownish-yellow
Clarity
Opaque / Heavily included with internal fractures and mineral veins
Shape
Rough / Uncut / Natural pebble
Overall Assessment
The specimen shown in the image is a rough, unpolished mineral aggregate (likely quartzite or quartz-rich rock) rather than a diamond. It lacks the crystal faces, high refractive index, and specific gravity of diamond, possessing instead a granular, fractured matrix typical of common silicate rocks.
Cut Quality
Not applicable (uncut raw stone)
Brilliance
None (opaque and unpolished)
Fire
None
Scintillation
None
Proportions
Irregular nodular form
Symmetry
Asymmetrical raw pebble
Polish
Unpolished natural surface texture
Fluorescence
Unknown without UV testing
Inclusions
Dense internal fracturing, grain boundaries, and opaque mineral inclusions
Blemishes
Natural surface pitting, rough patches, and weathering marks
Origin
Terrestrial rough stone found in alluvial deposits or matrix rock
Treatment Detection
No obvious signs of artificial enhancement; appears completely untreated and natural
Estimated Value
Minimal monetary value as a standard mineral specimen (few dollars)
Certification Estimate
Not eligible for standard gemological diamond certification; could be analyzed by a general gemological lab (GIA, Gubelin, etc.) for mineral identification
Investment Potential
None as an investment; strictly a collector or specimen piece
Similar Diamonds
None (this is not a diamond)
Setting Suggestions
Wire-wrapping or bespoke organic bezel setting if polished into a cabochon
Care & Maintenance
Standard gentle cleaning with mild soap and warm water; avoid harsh chemicals
Interesting Facts
Many untrained observers mistake raw quartz, quartzite, or weathered pebbles for rough diamonds due to surface texture and lustre