Not a diamond; this specimen appears to be industrial slag glass, obsidian, or heavily fractured amber/resin with conchoidal fracturing.
Not a diamond; this specimen appears to be industrial slag glass, obsidian, or heavily fractured amber/resin with conchoidal fracturing. · Rough uncut irregular mass / raw chunk with conchoidal fracture patterns
Not applicable (Raw, uncut, unpolished industrial or natural glass-like material) Cut
Carat
Not applicable (Mineraloid / Glass / Slag)
Color
Deep amber / dark brown with multi-colored iridescence
Clarity
Heavily included / opaque with internal fractures and stress cracks
Shape
Rough uncut irregular mass / raw chunk with conchoidal fracture patterns
Overall Assessment
Visual analysis confirms this specimen is not a diamond, but rather an amorphous glassy material—likely industrial glass slag or obsidian—displaying distinct conchoidal fractures and amber coloration.
Cut Quality
Not applicable (Raw, uncut, unpolished industrial or natural glass-like material)
Brilliance
Low, vitreous luster typical of glass rather than diamond adamantine luster
Fire
Minimal to none, lacks the high dispersion index of diamond
Scintillation
Poor due to lack of facets and opacity
Proportions
Irregular raw chunk dimensions, no standard proportions apply
Symmetry
Asymmetrical raw formation
Polish
Rough, unpolished surface showing conchoidal fracture ripples
Fluorescence
Unknown / Not tested under UV light
Inclusions
Numerous internal stress fractures, bubbles, and particulate matter typical of glass or slag
Blemishes
Conchoidal fracture marks, chipping along edges, and surface scratches
Origin
Likely anthropogenic (industrial slag glass) or volcanic glass (obsidian)
Treatment Detection
No gemstone treatments applicable; material is vitreous mass
Estimated Value
Nominal / Decorative / Curio value only (low monetary value)
Certification Estimate
Cannot be certified as a gemstone by standard gemological grading labs like GIA or IGI
Investment Potential
None as a gemstone or financial asset
Similar Diamonds
None; this specimen shares no physical or optical properties with diamond
Setting Suggestions
Not suitable for fine jewelry setting due to low hardness and fragility
Care & Maintenance
Handle with care to avoid chipping; avoid harsh chemicals and extreme thermal shock
Interesting Facts
The conchoidal fracture patterns visible at the top are characteristic of brittle amorphous solids like glass or quartz breaking under stress