Not a diamond; this specimen appears to be a raw or heavily fractured piece of blue glass or potentially a low-grade rough gemstone like blue quartz, sapphire, or slag glass rather than diamond.
Not a diamond; this specimen appears to be a raw or heavily fractured piece of blue glass or potentially a low-grade rough gemstone like blue quartz, sapphire, or slag glass rather than diamond. · Irregular raw rough / uncut crystal fragment
Not applicable (Rough / Uncut) Cut
Carat
Estimated around 5 to 10 carats based on visual scale in hand
Color
Fancy Deep Blue
Clarity
Included / Heavily flawed
Shape
Irregular raw rough / uncut crystal fragment
Overall Assessment
The specimen displayed in the image lacks the characteristic adamantine luster, crystal habit, and optical properties of a diamond. It strongly exhibits characteristics of raw blue glass or a low-grade mineral fragment with conchoidal fracturing. Professional gemological testing (such as a thermal conductivity or refractive index test) is strongly recommended to confirm exact identification.
Cut Quality
Not applicable (Rough / Uncut)
Brilliance
Poor to fair due to lack of standard facet alignment and material composition
Fire
Minimal to none
Scintillation
Absent due to lack of faceting and polish
Proportions
Not applicable for rough stones
Symmetry
Not applicable (Raw fragment)
Polish
Raw / Unpolished fracture surfaces
Fluorescence
Unable to determine without UV testing (Likely None to Faint)
Inclusions
Internal bubble-like inclusions or micro-fractures visible, suggesting non-diamond material (possibly glass)
Blemishes
Surface chips, conchoidal fractures, and natural rough irregularities
Origin
Synthetic/Man-made (if glass) or natural mineral deposit
Treatment Detection
Possible coloration treatment if glass or treated quartz
Estimated Value
Minimal monetary value (less than $10 if slag glass or decorative mineral fragment)
Certification Estimate
Major gemological laboratories (GIA, AGS) would not certify this as a diamond; likely identified as imitation material or rough mineral specimen if submitted.
Investment Potential
None as an investment; collectible as a mineral or glass specimen only
Similar Diamonds
None, as this specimen does not share any gemological properties with diamond
Setting Suggestions
Wire-wrapping or bespoke organic bezel setting if used for craft jewelry
Care & Maintenance
Standard gentle cleaning with warm soapy water and a soft brush; avoid harsh impacts as fracture lines make it fragile
Interesting Facts
Deep blue raw glass and slag often mimic rough sapphires or fancy colored diamonds to the untrained eye, but lack the hardness and optical properties of true gemstones.