Not a diamond (appears to be a water-worn quartz pebble or quartzite rock)
Not a diamond (appears to be a water-worn quartz pebble or quartzite rock) · Irregular / Rounded water-worn pebble
Not applicable (natural weathered shape, not a faceted gemstone) Cut
Carat
Not applicable (measured in grams, not carats for rough stone)
Color
Brownish-white / Greyish-translucent
Clarity
Not applicable (opaque to translucent rock matrix)
Shape
Irregular / Rounded water-worn pebble
Overall Assessment
The specimen shown in the image is a common weathered rock or quartz pebble, not a diamond. It lacks the crystal faces, high refractive index, adamantine luster, and specific gravity of diamond.
Cut Quality
Not applicable (natural weathered shape, not a faceted gemstone)
Brilliance
None (vitreous to dull luster)
Fire
None
Scintillation
None
Proportions
Not applicable
Symmetry
Asymmetrical (natural formation)
Polish
Natural matte / smooth tumbled by water
Fluorescence
Unknown / Not tested
Inclusions
Natural mineral grains, fractures, and organic staining
Blemishes
Natural pitting, weathering marks, and surface cracks
Origin
Alluvial / Riverbed or shoreline deposit
Treatment Detection
None (untreated natural rock)
Estimated Value
Minimal (negligible commercial value as a common rock specimen)
Certification Estimate
Not certifiable as a gemstone by standard labs (GIA, AGS, IGI)
Investment Potential
None
Similar Diamonds
None
Setting Suggestions
Not suitable for fine jewelry setting
Care & Maintenance
Standard cleaning with mild soap and water if collected as a decorative stone
Interesting Facts
Water-worn pebbles like this are often mistaken for rough diamonds or precious gemstones by novices due to their rounded appearance in riverbeds.