Natural (Rough / Industrial Grade / Carbonado-like appearance)
Natural (Rough / Industrial Grade / Carbonado-like appearance) · Uncut / Raw crystal fragment / Irregular rough
Not Applicable (Rough un-faceted stone) Cut
Carat
Estimated 0.8 - 1.2 carats visually
Color
Fancy Dark Grey / Black (Opaque industrial diamond)
Clarity
Included / I3 (Heavily included with carbon spots and structural inclusions)
Shape
Uncut / Raw crystal fragment / Irregular rough
Overall Assessment
This specimen is an un-faceted, opaque, dark industrial-grade rough diamond fragment. While lacking the optical properties and brilliance of gem-quality faceted diamonds, it possesses a unique organic charm suitable for raw crystal jewelry or mineral collections.
Cut Quality
Not Applicable (Rough un-faceted stone)
Brilliance
Very Low to None due to opacity and lack of facets
Fire
None due to opaque body color and absence of cut facets
Scintillation
Minimal to none, limited to surface light reflection off raw crystal faces
Proportions
Not Applicable for rough raw stones
Symmetry
Asymmetrical (Natural rough crystal habit)
Polish
Raw / Unpolished surface texture
Fluorescence
Cannot determine accurately from photo (likely None to Faint)
Inclusions
Massive internal black carbon spots, cloudiness, feathers, and micro-fractures typical of industrial rough
Blemishes
Natural rough skin, trigons, pitting, and uneven growth lines
Origin
Likely African or South American alluvial or primary pipe deposit source
Treatment Detection
No obvious signs of artificial treatment; Appears as completely untreated natural rough
Estimated Value
Low commercial value ($20 - $100 depending on hardness and industrial utility)
Certification Estimate
Industrial evaluation or basic GIA/AGS rough certificate noting industrial grade
Investment Potential
Negligible investment value; sold primarily as a curiosity, mineral specimen, or for industrial/abrasive use
Similar Diamonds
Industrial grade diamond bort, low-quality carbonado, or raw diamond crystal fragments used in specimen jewelry
Setting Suggestions
Wire-wrapped, organic raw prong setting, or protected bezel in sterling silver or oxidized metals for a rustic aesthetic
Care & Maintenance
Avoid harsh ultrasonic cleaners if inclusions are deep; clean gently with warm soapy water and a soft brush
Interesting Facts
Rough diamonds of this dark, opaque variety are frequently utilized in industrial cutting tools, drill bits, and abrasive powders rather than fine jewelry