Not a diamond; this is a piece of rough blue glass or synthetic material, displaying conchoidal fracture typical of amorphous substances.
Not a diamond; this is a piece of rough blue glass or synthetic material, displaying conchoidal fracture typical of amorphous substances. · Rough irregular fragment / unprocessed crystal form
Not applicable (raw, uncut, unpolished material) Cut
Carat
Cannot be precisely determined visually without density testing, but appears large as a heavy fragment (estimated over 15-20 carats equivalent weight).
Color
Deep vivid blue (Fancy Dark Blue in gemological terms, but standard diamond color scale D-Z does not apply)
Clarity
Not applicable (glass contains internal bubbles, flow lines, and conchoidal fracture features rather than crystalline inclusions)
Shape
Rough irregular fragment / unprocessed crystal form
Overall Assessment
This specimen is clearly not a diamond, nor even a genuine gemstone. The conchoidal fracture patterns, lack of crystal faces, and vitreous appearance strongly indicate a piece of rough blue glass.
Cut Quality
Not applicable (raw, uncut, unpolished material)
Brilliance
Low to moderate vitreous luster, lacking true diamond brilliance
Fire
Absent (glass lacks high dispersion of a diamond)
Scintillation
Minimal, reflecting light off rough cleavage and fracture planes rather than precise facets
Proportions
Non-standard proportions due to being raw, unfaceted material
Symmetry
Asymmetrical raw fracture surface
Polish
Unpolished, rough fracture texture with conchoidal ripples
Fluorescence
Indeterminate from visual inspection alone
Inclusions
Conchoidal fracture marks, potential gas bubbles typical of manufactured glass
Blemishes
Rough edges, chips, and surface striations from breakage
Origin
Man-made / Manufactured glass
Treatment Detection
Material is entirely synthetic/artificial in origin
Estimated Value
Minimal monetary value (decorative or educational specimen only)
Certification Estimate
Standard gemological laboratories (GIA, IGI) would issue a report identifying this as synthetic/man-made glass rather than a gemstone.
Investment Potential
None; this specimen holds no financial investment value
Similar Diamonds
None (this specimen bears no resemblance to a genuine diamond)
Setting Suggestions
Not recommended for fine jewelry due to softness and fragility
Care & Maintenance
Store separately to avoid scratching softer materials, though it requires no specialized gemstone care
Interesting Facts
Bright blue glass is frequently mistaken by novices for rough sapphire or rare blue diamond due to its intense color and vitreous luster.