Not a diamond; appears to be quartz, quartzite, or a river-worn pebble (silicate mineral)
Not a diamond; appears to be quartz, quartzite, or a river-worn pebble (silicate mineral) · Irregular, rounded pebble or water-worn raw mineral shape
Uncut / Raw / Natural pebble form (Not applicable) Cut
Carat
Cannot be precisely determined visually without density testing, estimated roughly equivalent to 10-20 carats in mass
Color
Off-white to yellowish-brown (brownish-white due to iron oxide staining)
Clarity
Heavily included / Opaque to translucent with abundant internal fractures and mineral stains (Not applicable on diamond grading scale)
Shape
Irregular, rounded pebble or water-worn raw mineral shape
Overall Assessment
The specimen shown in the image is a raw, water-worn mineral pebble—likely quartz or quartzite—and is definitively not a diamond. It lacks the crystal habit, hardness, refractive index, and optical properties characteristic of diamond.
Cut Quality
Uncut / Raw / Natural pebble form (Not applicable)
Brilliance
Low brilliance due to lack of faceting and opaque/fractured internal structure
Fire
Minimal to none, typical of non-diamond raw minerals
Scintillation
Poor, as light passes through or scatters rather than reflecting off precise facets
Proportions
Irregular natural proportions; no facets, table, or pavilion exist
Symmetry
Asymmetrical, natural rounded pebble form
Polish
Natural water-worn tumbled polish (matte to sub-vitreous)
Fluorescence
Unknown without UV testing
Inclusions
Numerous internal fractures, mineral inclusions (likely iron oxides or dark mineral flecks)
Blemishes
Surface pitting, natural weathering marks, and abrasion from alluvial transport
Origin
Alluvial deposit (riverbed, beach, or glacial till)
Treatment Detection
No artificial treatments detected; entirely natural weathering and staining
Estimated Value
Nominal value (specimen or decorative stone value, negligible monetary worth)
Certification Estimate
Standard gemological laboratories (e.g., GIA) would issue a mineral report identifying it as quartz/quartzite rather than a diamond grading report
Investment Potential
None as a gemstone or financial asset
Similar Diamonds
None (this is not a diamond)
Setting Suggestions
Wire-wrapped or organic bezel setting if used for craft or wire-wrapping jewelry
Care & Maintenance
Standard washing with mild soap and water; durable mineral (Mohs hardness 7 if quartz), but has no commercial jewelry care requirements
Interesting Facts
Stones like this are often mistaken by amateurs for rough diamonds due to their rounded shape and translucent appearance in riverbeds