Not a diamond; this is a rough, unworked alluvial quartz or quartzite pebble/stone showing natural weathering, matrix attachments, and no crystalline diamond morphology.
Not a diamond; this is a rough, unworked alluvial quartz or quartzite pebble/stone showing natural weathering, matrix attachments, and no crystalline diamond morphology. · Irregular, water-worn pebble or rounded nodule form
Uncut / Raw natural stone Cut
Carat
Not applicable (stone weight exceeds gemstone sizing, estimated over 50+ carats of aggregate mineral mass)
Color
Off-white to translucent gray-brown with surface staining
Clarity
Opaque to heavily included aggregate (Not applicable for gem diamond grading)
Shape
Irregular, water-worn pebble or rounded nodule form
Overall Assessment
The specimen in the image is a weathered natural rock or mineral pebble (likely quartz or quartzite) rather than a diamond. It lacks the crystal structure, adamantine luster, hardness, and optical properties characteristic of diamond.
Cut Quality
Uncut / Raw natural stone
Brilliance
Poor to non-existent due to lack of facets and transparency
Fire
None
Scintillation
None
Proportions
Not applicable for a non-gem mineral specimen
Symmetry
Asymmetrical, naturally tumbled
Polish
Natural alluvial polish, greasy to waxy luster
Fluorescence
None observed
Inclusions
Heavy mineral inclusions, fractures, and surrounding matrix rock
Blemishes
Natural surface pitting, abrasion marks, and weathering patinas
Origin
Alluvial riverbed or surface deposit showing natural weathering
Treatment Detection
Untreated natural mineral specimen
Estimated Value
Nominal / Zero commercial gemstone value (common mineral specimen)
Certification Estimate
Not certifiable as a gemstone by major labs (GIA/AGS/IGI); requires geological rather than gemological analysis
Investment Potential
None as an investment asset
Similar Diamonds
None (no similarity to diamond)
Setting Suggestions
Not suitable for fine jewelry setting without significant cutting and polishing as a cabochon
Care & Maintenance
Standard mineral specimen care; wash with mild soap and water if needed
Interesting Facts
Many untrained observers mistake weathered quartz, quartzite, or river stones for rough diamonds due to their rounded appearance in riverbeds.