The specimen in the image is not a diamond; it appears to be a piece of slag glass or a blue mineral like cobalt-glass cullet, likely natural or industrial byproduct.
The specimen in the image is not a diamond; it appears to be a piece of slag glass or a blue mineral like cobalt-glass cullet, likely natural or industrial byproduct. · Rough / Uncut (Amorphous with conchoidal fractures)
N/A (Uncut/Rough) Cut
Carat
Estimated 25 to 50 carats based on visual scale against host material
Color
Deep Cobalt Blue (Not applicable to the white diamond D-Z scale)
Clarity
Translucent to Opaque with heavy internal swirl marks and air bubbles
Shape
Rough / Uncut (Amorphous with conchoidal fractures)
Overall Assessment
This is a non-diamond specimen, most likely a fragment of blue industrial glass or slag. It lacks the refractive index, crystal structure, and thermal conductivity of a diamond.
Cut Quality
N/A (Uncut/Rough)
Brilliance
Very Low (Sub-vitreous luster)
Fire
None (No dispersion observed)
Scintillation
Negligible
Proportions
N/A (Non-faceted)
Symmetry
N/A (Rough material)
Polish
N/A (Naturally matte and fractured surfaces)
Fluorescence
None observed (Typical for glass)
Inclusions
Gas bubbles and flow lines characteristic of glass or man-made slag
Blemishes
Deep conchoidal chips and surface pitting
Origin
Industrial byproduct (Slag glass) or synthetic glass melt
Treatment Detection
N/A; color is inherent to the glass composition (cobalt coloring agent)
Estimated Value
$1 - $10 (Decorative value or landscape glass)
Certification Estimate
Material would not qualify for GIA/AGS diamond grading; could be identified as 'Man-made glass' by a gem lab.
Investment Potential
None
Similar Diamonds
None; does not resemble any natural blue diamond (which are typically lighter or contain grey/green modifiers)
Setting Suggestions
Wire wrapping for decorative/hobbyist jewelry only
Care & Maintenance
Avoid heavy impact as glass is brittle and susceptible to further fracturing.
Interesting Facts
The conchoidal (shell-like) fracture pattern is a primary indicator of glass and distinguishes it from crystal systems like diamond.