Non-Diamond (Common Opaque Stone)
Non-Diamond (Common Opaque Stone) · Tumbled/Baroque (Irregular Oval)
Poor (Non-faceted) Cut
Carat
Estimated 2.5 - 4.5 carats
Color
Fancy Matte Blue / Denim Blue
Clarity
Opaque (Not applicable to diamond scales)
Shape
Tumbled/Baroque (Irregular Oval)
Overall Assessment
This specimen is not a diamond. It is an opaque, tumbled blue stone, likely a decorative rock or common mineral. It lacks the refractive index, facet structure, and brilliance required for diamond classification.
Cut Quality
Poor (Non-faceted)
Brilliance
None (Absorbs light)
Fire
None (No dispersion)
Scintillation
None
Proportions
Not measurable for standard diamond analysis
Symmetry
Poor / Asymmetrical
Polish
Medium (Tumbled finish)
Fluorescence
None observable
Inclusions
Granular texture visible on surface; internal structure is opaque
Blemishes
Surface scuffs consistent with tumbling; dull luster
Origin
Terrestrial mineral; likely common quartz or similar silicates
Treatment Detection
Possibly dyed; surface appears artificially polished
Estimated Value
$0.50 - $2.00 USD (Generic craft/rock shop value)
Certification Estimate
N/A (Likely would be rejected by GIA/AGS as a diamond; could be identified as Blue Quartz or Dumortierite)
Investment Potential
None
Similar Diamonds
None (Appearance is closer to sodalite or blue aventurine)
Setting Suggestions
Wire wrapping or inexpensive costume jewelry bezel
Care & Maintenance
Basic cleaning with soap and water; avoid high heat if dyed
Interesting Facts
The appearance of mica-like flecks suggests this belongs to the aventurine or quartz family rather than the diamond family