Not a diamond; this is a raw mineral specimen, visually consistent with blue glass or synthetic cobalt blue material.
Not a diamond; this is a raw mineral specimen, visually consistent with blue glass or synthetic cobalt blue material. · Uncut raw mineral crystal/rough chunk
Not applicable (uncut rough material) Cut
Carat
Roughly 3 to 5 carats visually (estimated based on size relative to fingers)
Color
Deep Fancy Vivid Blue
Clarity
Included / Heavily included with visible internal bubbles and fractures typical of glass
Shape
Uncut raw mineral crystal/rough chunk
Overall Assessment
The specimen is a vivid blue rough fragment, highly likely to be synthetic glass rather than a genuine gemstone such as sapphire or tanzanite, and possesses no diamond characteristics whatsoever.
Cut Quality
Not applicable (uncut rough material)
Brilliance
Low to moderate vitreous luster typical of glass
Fire
None, as dispersion is minimal in this type of material
Scintillation
Poor due to lack of standard facet alignment
Proportions
N/A - raw un-faceted crystal
Symmetry
Asymmetrical raw formation
Polish
Unpolished, rough fracture surfaces
Fluorescence
Unknown without UV testing, though cobalt-colored glass can sometimes show inert or chalky responses
Inclusions
Gas bubbles and internal stress fractures visible
Blemishes
Rough surface texturing, chipping, and uneven edges
Origin
Man-made / Laboratory or industrial origin (glass)
Treatment Detection
Likely colored via cobalt or other metallic oxides during manufacture
Estimated Value
Minimal nominal value (decorative or educational mineral specimen only)
Certification Estimate
Standard gemological laboratories (GIA, IGI) would issue a report identifying this as man-made glass or composite material rather than a gemstone
Investment Potential
None as an investment asset
Similar Diamonds
None, as this bears no gemological similarity to a diamond
Setting Suggestions
Not recommended for fine jewelry settings due to softness and fragility
Care & Maintenance
Keep away from hard surfaces to prevent chipping; clean with mild soapy water
Interesting Facts
Cobalt blue glass is frequently mistaken by novices for high-grade rough sapphire or tanzanite due to its intense coloration