Non-diamond mineral (likely Agate/Chalcedony)
Non-diamond mineral (likely Agate/Chalcedony) · Rough/Raw irregular fragment
Not applicable (Uncut) Cut
Carat
Estimated 5-8 carats based on size relative to carpet fibers
Color
Fancy Blue-Gray with brown/orange oxidation
Clarity
Opaque to Translucent
Shape
Rough/Raw irregular fragment
Overall Assessment
This specimen is not a diamond. It is a piece of banded agate or chalcedony, characterized by its waxy luster, blue-gray banding, and lack of diamond-like crystal structure.
Cut Quality
Not applicable (Uncut)
Brilliance
Very low (Waxy to dull luster)
Fire
None
Scintillation
None
Proportions
Not applicable for a rough specimen
Symmetry
Poor (Natural irregular shape)
Polish
Matte/Natural weathered surface
Fluorescence
None observable in current lighting
Inclusions
Distinct banding (concentric/parallel layering) and matrix attachment
Blemishes
Natural surface fractures and iron-oxide staining
Origin
Terrestrial sedimentary environment (e.g., Lake Superior or riverbed)
Treatment Detection
None visible; natural weathered state
Estimated Value
$1 - $5 (Specimen value only)
Certification Estimate
N/A - Not a gem-quality diamond; GIA would likely identify as Blue Agate
Investment Potential
None; common mineral specimen
Similar Diamonds
None (No resemblance to diamond lattice structure)
Setting Suggestions
Wire-wrapped pendant or tumbled pocket stone
Care & Maintenance
Avoid harsh chemicals; clean with warm soapy water
Interesting Facts
The banding indicates rhythmic precipitation of silica in a cavity, typical of chalcedony varieties.