Not a diamond (appears to be a rough quartz pebble, chert, or quartzite)
Not a diamond (appears to be a rough quartz pebble, chert, or quartzite) · Uncut, water-worn natural pebble shape (oval-ish rough)
Not applicable (uncut raw stone) Cut
Carat
Cannot accurately estimate without dimensions/density testing, roughly estimated at 15-25 carats based on volume
Color
Milky white / translucent to opaque with brownish-yellow surface staining
Clarity
Included / Heavily included (opaque with numerous internal fractures and inclusions)
Shape
Uncut, water-worn natural pebble shape (oval-ish rough)
Overall Assessment
The specimen shown in the image is a raw, unpolished, water-worn mineral pebble—likely quartz, quartzite, or chert—rather than a diamond. It lacks the characteristic crystal habit, high refractive index, and adamantine luster of rough diamond crystals.
Cut Quality
Not applicable (uncut raw stone)
Brilliance
Poor to none due to lack of faceting and opaque nature
Fire
None
Scintillation
None
Proportions
Not applicable to raw pebbles
Symmetry
Natural irregular symmetry
Polish
Raw natural matte texture with some worn surfaces (no gem-grade polish)
Fluorescence
Unknown (requires UV testing)
Inclusions
Numerous internal fractures, clouds, and feather-like inclusions visible
Blemishes
Natural surface pits, rough spots, abrasion marks, and potential mineral staining
Origin
Alluvial deposit (riverbed or beach pebble)
Treatment Detection
No treatments detected; completely natural raw mineral specimen
Estimated Value
Minimal to negligible (common rock/mineral specimen value, typically under $5)
Certification Estimate
Not eligible for diamond certification (would be identified as quartz or rock by GIA/AGS)
Investment Potential
None (specimen value only)
Similar Diamonds
None (this is not a diamond)
Setting Suggestions
Not recommended for fine jewelry, but could be wire-wrapped as a rustic raw stone pendant
Care & Maintenance
Standard cleaning with mild soap and water; store separately to avoid scratching softer materials
Interesting Facts
Many untrained individuals mistake weathered quartz pebbles found in rivers or on beaches for rough diamonds or diamond crystals