Not a diamond; this specimen appears to be green glass or slag, possibly colored by chromium or iron impurities.
Not a diamond; this specimen appears to be green glass or slag, possibly colored by chromium or iron impurities. · Irregular raw fragment / unstructured shard
Not applicable (uncut raw shard with conchoidal fracture) Cut
Carat
Estimated around 15-25 carats equivalent volume based on visual scale
Color
Vivid Green (Fancy Intense Green appearance if it were a gemstone)
Clarity
Included / contains internal bubbles typical of glass
Shape
Irregular raw fragment / unstructured shard
Overall Assessment
The specimen shown in the image is definitively not a diamond. It exhibits characteristics typical of green glass, such as conchoidal fractures, internal gas bubbles, and a vitreous luster, requiring no further gemological testing for diamond authenticity.
Cut Quality
Not applicable (uncut raw shard with conchoidal fracture)
Brilliance
Low to moderate vitreous luster
Fire
None (glass lacks significant dispersion)
Scintillation
Poor, limited to surface reflections
Proportions
Elongated blocky shard, no standard pavilion or crown angles
Symmetry
Asymmetrical raw shard
Polish
Raw unpolished fracture surfaces
Fluorescence
None observed
Inclusions
Gas bubbles and flow lines characteristic of synthetic glass
Blemishes
Surface scratches, pitting, and conchoidal chipping
Origin
Man-made glass or industrial slag
Treatment Detection
Colored glass composition
Estimated Value
Minimal to negligible monetary value as a gemstone or diamond; decorative or industrial scrap value only
Certification Estimate
Cannot be certified as a diamond or gemstone by standard labs (GIA, IGI)
Investment Potential
None
Similar Diamonds
None, as true green natural or treated diamonds have entirely different crystallographic properties
Setting Suggestions
Not recommended for fine jewelry settings due to low hardness and fragile nature
Care & Maintenance
Handle with care to avoid chipping the edges; clean with mild soapy water
Interesting Facts
Green glass and green slag are frequently mistaken for rough emeralds, peridot, or green diamonds by novice collectors due to their vibrant coloration.