Not a diamond; this specimen appears to be green glass or a green mineral crystal (such as rough emerald or tourmaline) rather than a diamond.
Not a diamond; this specimen appears to be green glass or a green mineral crystal (such as rough emerald or tourmaline) rather than a diamond. · Raw, uncut, amorphous rough crystal/fragment
Not applicable (uncut raw rough) Cut
Carat
Cannot be precisely determined from visual assessment alone, roughly estimated at 15-25 carats equivalent volume
Color
Vivid green / Fancy Deep Green (non-applicable to standard D-Z diamond color scale)
Clarity
Included / Heavily included (non-applicable standard)
Shape
Raw, uncut, amorphous rough crystal/fragment
Overall Assessment
The specimen in the image is definitively not a diamond. It displays characteristics consistent with raw colored glass or a low-grade green mineral crystal. Professional gemological testing (refractive index, specific gravity, spectroscopy) is advised for a definitive identification.
Cut Quality
Not applicable (uncut raw rough)
Brilliance
Low to moderate due to raw, unfaceted state and opacity
Fire
Minimal to none
Scintillation
None due to lack of facets
Proportions
Not applicable to raw rough stones
Symmetry
Asymmetrical raw formation
Polish
Raw, unpolished surface texture showing conchoidal fracture lines typical of glass or certain minerals
Fluorescence
Unknown / Not tested
Inclusions
Internal fractures, bubbles or mineral veining visible
Blemishes
Surface scratches, chipped edges, and uneven texture
Origin
Unknown; potentially synthetic or natural non-diamond mineral/slag glass
Treatment Detection
Visual inspection suggests possible man-made glass material due to flow lines and fracture patterns, laboratory testing recommended
Estimated Value
Nominal decorative or collector value (very low if identified as glass)
Certification Estimate
Not eligible for GIA diamond grading; would require gemological laboratory testing (e.g., GIA colored stone report) to confirm identity
Investment Potential
None; specimen holds no gemstone investment value
Similar Diamonds
None, as this is not a diamond
Setting Suggestions
Wire-wrap or custom bezel setting if desired for raw mineral display
Care & Maintenance
Store carefully to prevent chipping; avoid harsh chemicals and ultrasonic cleaners until exact material is identified
Interesting Facts
Green rough stones are frequently mistaken for precious gems like emerald or colored diamonds by untrained observers