Not a diamond; this is a rough blue gemstone, likely blue glass or synthetic spinel/sapphire material, given the conchoidal fracture and deep electric blue color.
Not a diamond; this is a rough blue gemstone, likely blue glass or synthetic spinel/sapphire material, given the conchoidal fracture and deep electric blue color. · Rough crystal fragment with irregular natural or fractured shape
Not Applicable (uncut rough material) Cut
Carat
Estimated rough weight around 3.0 to 5.0 carats based on visual scale relative to human fingers
Color
Vivid Fancy Blue
Clarity
Included / SI equivalent due to internal fracture lines and cloudiness
Shape
Rough crystal fragment with irregular natural or fractured shape
Overall Assessment
The specimen shown is an intensely vibrant blue rough material with conchoidal fractures, resembling colored glass or a synthetic simulant rather than a genuine diamond or precious sapphire.
Cut Quality
Not Applicable (uncut rough material)
Brilliance
Varies due to rough surface and internal light scattering
Fire
Low dispersion typical of colored glass or non-diamond rough
Scintillation
Limited flash effect due to lack of faceted geometry
Proportions
Not applicable for rough uncut stone
Symmetry
Asymmetrical rough specimen
Polish
Unpolished, natural or fractured surface textures
Fluorescence
Unknown without UV testing, though typical synthetic blue glass may show inert or chalky reaction
Inclusions
Internal stress fractures, bubbles, or feather inclusions typical of raw material or glass simulation
Blemishes
Surface scratches, pitting, and conchoidal fracture ripples
Origin
Synthetic / Man-made glass or rough rough mineral simulant
Treatment Detection
Appears to be colored glass or unheated untreated raw simulant material
Estimated Value
Nominal value (under $20 as a mineral specimen or glass rough)
Certification Estimate
Standard gemological labs (GIA, GRS) would identify as synthetic or imitation material if tested
Investment Potential
No investment value; purely decorative or educational
Similar Diamonds
None, as this is a colored gemstone rough/imitation rather than a diamond
Setting Suggestions
Wire-wrapping or bespoke organic bezel setting if polished into a cabochon
Care & Maintenance
Standard gentle cleaning with mild soapy water and a soft brush
Interesting Facts
Bright electric blue rough stones are frequently encountered as glass simulants rather than high-value natural sapphires or rare blue diamonds.