The specimen in the image is not a diamond. It appears to be a mineral crystal, likely a type of blue silicate or copper-based mineral such as Linarite or Azurite, or potentially a piece of blue glass slag/industrial byproduct.
The specimen in the image is not a diamond. It appears to be a mineral crystal, likely a type of blue silicate or copper-based mineral such as Linarite or Azurite, or potentially a piece of blue glass slag/industrial byproduct. · Rough / Uncut (Massive/Crystalline structure)
Not Applicable (Rough Specimen) Cut
Carat
Estimated 20-50 carats based on size relative to host rock
Color
Fancy Deep Royal Blue (Vivid Saturation)
Clarity
Translucent to Opacity (Equivalent to I3 / Non-gem grade if it were diamond)
Shape
Rough / Uncut (Massive/Crystalline structure)
Overall Assessment
This item is not a diamond. It is a blue mineral crystal embedded in a ferruginous (iron-rich) matrix. It lacks the isometric crystal structure, refractive index, and luster associated with carbon-based diamonds.
Cut Quality
Not Applicable (Rough Specimen)
Brilliance
Very Low (Vitreous to dull luster)
Fire
None
Scintillation
None
Proportions
Not Applicable
Symmetry
Not Applicable
Polish
None (Natural rough surface with conchoidal or uneven fracture)
Fluorescence
None observed (Requires UV light for confirmation)
Inclusions
Heavy internal fracturing, color zoning, and presence of earthy matrix inclusions
Blemishes
Dull surface luster, abrasions, and impact marks consistent with mineral extraction
Origin
Likely secondary deposit or oxidized zone of a copper mine (e.g., Arizona or Morocco)
Treatment Detection
None detected; appears to be natural rough mineral in matrix
Estimated Value
$5 - $50 (Value as a mineral specimen, not a gemstone)
Certification Estimate
Likely GIA or IGI for identification only (not as a diamond)
Investment Potential
None; purely a hobbyist mineral specimen
Similar Diamonds
None (No blue diamond exhibits this specific crystal morphology and opacity)
Setting Suggestions
Collection specimen box or a wire-wrapped cage for display
Care & Maintenance
Avoid chemical cleaners; clean with a soft dry brush to prevent damage to the host matrix
Interesting Facts
Certain blue minerals like Linarite are often mistaken for sapphires or rare blue diamonds by novice collectors due to their intense color.