Not a diamond; this specimen appears to be green glass or slag, displaying conchoidal fracture and flow lines characteristic of amorphous materials rather than crystalline diamond.
Not a diamond; this specimen appears to be green glass or slag, displaying conchoidal fracture and flow lines characteristic of amorphous materials rather than crystalline diamond. · Rough / Ungraded, irregular fracture piece
Not applicable (uncut, raw glass material) Cut
Carat
Not applicable for a non-gemstone material
Color
Light green
Clarity
Not applicable (contains internal bubbles and flow lines common in glass)
Shape
Rough / Ungraded, irregular fracture piece
Overall Assessment
The specimen shown in the image is definitively not a diamond. The visible conchoidal fractures, striations, and lack of crystal faces strongly indicate it is a piece of green glass or slag.
Cut Quality
Not applicable (uncut, raw glass material)
Brilliance
Low to moderate vitreous luster
Fire
Minimal to none (glass has a low dispersion compared to diamond)
Scintillation
Poor due to lack of standard facet arrangement
Proportions
Not applicable
Symmetry
None (irregular natural break / manufactured shape)
Polish
Unpolished surface showing conchoidal fracture
Fluorescence
Cannot be determined without UV testing
Inclusions
Internal gas bubbles and flow lines visible, typical of manufactured glass
Blemishes
Surface scratches, conchoidal ripples
Origin
Man-made glass or industrial byproduct
Treatment Detection
Colored glass, no diamond-specific treatments applicable
Estimated Value
Nominal / Low decorative or industrial slag value (effectively zero as a gem)
Certification Estimate
Not gradable by major gemological laboratories (GIA, AGS, IGI) as a diamond
Investment Potential
None
Similar Diamonds
None, as this material shares no properties with diamond
Setting Suggestions
Not recommended for fine jewelry due to low hardness and durability
Care & Maintenance
Handle with care to avoid chipping, clean with mild soapy water
Interesting Facts
Green glass is frequently mistaken for rough peridot, green beryl, or green diamond by untrained observers due to its color.