Not a diamond; appears to be raw colored glass or quartz/slag material, commonly misrepresented as a diamond or rough gemstone.
Not a diamond; appears to be raw colored glass or quartz/slag material, commonly misrepresented as a diamond or rough gemstone. · Rough crystal / Raw irregular shape
Not applicable (uncut raw specimen) Cut
Carat
Estimated around 3.5 to 5.0 carats based on visual size
Color
Fancy Vivid Blue-Green (non-diamond color descriptor)
Clarity
Not applicable to diamonds; shows internal fractures and bubbles typical of glass
Shape
Rough crystal / Raw irregular shape
Overall Assessment
The specimen shown in the image is definitively not a diamond. Its vitreous luster, intense uniform coloration, and internal characteristics strongly suggest it is colored glass or slag.
Cut Quality
Not applicable (uncut raw specimen)
Brilliance
Low to moderate vitreous luster, not diamond adamantine luster
Fire
Minimal dispersion, far below diamond standards
Scintillation
Poor, lacks standard facet arrangement for return of light
Proportions
N/A for raw stones
Symmetry
Irregular / Asymmetrical natural rough form
Polish
Unpolished raw surface
Fluorescence
Unknown without UV testing
Inclusions
Internal fractures, possible gas bubbles typical of synthetic or glass-like material
Blemishes
Surface scratches and chips from rough handling
Origin
Likely synthetic/man-made glass or slag
Treatment Detection
Colored glass composition
Estimated Value
Nominal decorative value (under $10 USD)
Certification Estimate
Not certifiable by major diamond labs like GIA as a diamond
Investment Potential
None; zero resale value as a gemstone
Similar Diamonds
None, as this is not a diamond
Setting Suggestions
Wire-wrapping or artisan bezel setting if used for craft purposes
Care & Maintenance
Store separately to avoid scratching softer materials; clean with mild soap and water
Interesting Facts
Vibrant blue-green rough glass is frequently sold to tourists or novices under deceptive names