Not a diamond; this specimen appears to be glass or quartz/slag with conchoidal fractures, typical of amorphous or non-gem materials rather than crystalline diamond.
Not a diamond; this specimen appears to be glass or quartz/slag with conchoidal fractures, typical of amorphous or non-gem materials rather than crystalline diamond. · Irregular / Raw fragment with conchoidal fracture
Not applicable (uncut, raw, fractured fragment) Cut
Carat
Not applicable (specimen is not a gemstone diamond)
Color
Colorless to light brownish tints
Clarity
Not applicable (contains prominent internal streaks, bubbles, and flow lines characteristic of glass)
Shape
Irregular / Raw fragment with conchoidal fracture
Overall Assessment
The specimen shown in the image is definitively not a diamond. Visual inspection reveals distinct conchoidal fracture patterns, flow lines, and lack of crystal faces or adamantine luster typical of rough diamond. It is most consistent with a piece of industrial glass, slag, or a common amorphous silica material.
Cut Quality
Not applicable (uncut, raw, fractured fragment)
Brilliance
Vitreous and glassy luster, lacking true diamond adamantine brilliance
Fire
Very low dispersion compared to diamond
Scintillation
Minimal and erratic due to irregular fractured surfaces
Proportions
Not applicable
Symmetry
None (asymmetric raw fragment)
Polish
Natural fractured surfaces with vitreous luster
Fluorescence
Indeterminate visually
Inclusions
Internal swirl marks, striations, and potential gas bubbles indicative of glass or synthetic slag
Blemishes
Surface scratches, chips, and irregular fracture planes
Origin
Man-made glass, industrial byproduct, or slag
Treatment Detection
N/A
Estimated Value
Minimal to zero monetary value as a gemstone
Certification Estimate
Gemological laboratories would not issue a diamond grading report for this material; likely identified as glass or mineral slag upon standard testing (thermal/refractive index).
Investment Potential
None
Similar Diamonds
None, as this material is structurally and compositionally unrelated to diamond
Setting Suggestions
Not recommended for jewelry settings due to low durability and non-gem status
Care & Maintenance
Handle with care if sharp edges are present; standard cleaning with mild soap and water if needed
Interesting Facts
Conchoidal fractures like the ones visible here are commonly found in glass, obsidian, and quartz when struck, often mistaken by novices for rough gemstones.