Not a diamond (appears to be raw mineral slag or obsidian with conchoidal fractures)
Not a diamond (appears to be raw mineral slag or obsidian with conchoidal fractures) · Rough uncut nodule with conchoidal fracture patterns
Not applicable (uncut raw material) Cut
Carat
Not applicable (rough mineral specimen)
Color
Opaque dark black / iridescent sheen
Clarity
Not applicable (opaque specimen)
Shape
Rough uncut nodule with conchoidal fracture patterns
Overall Assessment
The specimen shown in the image is not a diamond, but rather a dark, glassy mineral or industrial slag exhibiting characteristic conchoidal fracture patterns.
Cut Quality
Not applicable (uncut raw material)
Brilliance
Low to vitreous luster in reflective areas
Fire
None
Scintillation
None
Proportions
Not applicable
Symmetry
Asymmetrical raw formation
Polish
Unpolished natural or fractured surface
Fluorescence
Not evaluated
Inclusions
Dense internal structure with potential gas bubbles or mineral impurities
Blemishes
Conchoidal fracture lines, pits, and surface weathering
Origin
Terrestrial volcanic or industrial byproduct
Treatment Detection
None detected
Estimated Value
Nominal mineral specimen value
Certification Estimate
Not certifiable as a gemstone by standard grading labs (GIA, IGI)
Investment Potential
None as a gemstone investment
Similar Diamonds
None (not a diamond)
Setting Suggestions
Wire-wrapping or bespoke organic bezel setting if used as a curiosity piece
Care & Maintenance
Standard mineral specimen care, avoid harsh acids and impact due to brittle conchoidal fracture
Interesting Facts
Displays prominent conchoidal fractures typical of amorphous glass-like structures