Non-diamond (Natural River Rock/Pebble)
Non-diamond (Natural River Rock/Pebble) · Natural/Ovoid (Smooth river-worn pebble)
N/A (Uncut/Natural Surface) Cut
Carat
Estimated 1,500 - 2,250 carats based on typical rock density and size relative to hand
Color
N/A (Opaque Dark Grey/Black)
Clarity
N/A (Opaque)
Shape
Natural/Ovoid (Smooth river-worn pebble)
Overall Assessment
The specimen provided is a natural, opaque river stone or pebble, likely composed of basalt or a similar dense mineral. It lacks the crystal structure, transparency, and refractive properties of a diamond.
Cut Quality
N/A (Uncut/Natural Surface)
Brilliance
None (Opaque material does not refract light)
Fire
None (No spectral dispersion)
Scintillation
None
Proportions
N/A (Not a faceted gemstone)
Symmetry
Poor (Natural asymmetric formation)
Polish
Dull (Natural weathered matte finish with surface scratches)
Fluorescence
Likely None (Typical of basaltic or sedimentary stones)
Inclusions
N/A (Opaque material; surface shows mineral grains and pitting)
Blemishes
Extensive surface scratches, abrasions, and impact marks consistent with fluvial erosion
Origin
Terrestrial (Likely from a riverbed, beach, or alluvial deposit)
Treatment Detection
None detected; appears to be a natural river-tumbled stone
Estimated Value
Negligible market value ($0 - $1 as a decorative pebble)
Certification Estimate
Not eligible for diamond grading (GIA/IGI would identify as a rock specimen)
Investment Potential
None (Common geological material)
Similar Diamonds
None (This specimen is a rock, not a diamond)
Setting Suggestions
Not suitable for traditional jewelry setting; could be used in wire wrapping or as a pocket stone
Care & Maintenance
Requires no special care; durable against most household chemicals and impacts
Interesting Facts
Smooth stones like this are shaped over thousands of years by the movement of water and abrasive sands in riverbeds.