Natural Carbonado Diamond (Industrial Grade / Bort)
Natural Carbonado Diamond (Industrial Grade / Bort) · Rough Uncut Crystalline Aggregate
Not Applicable (Uncut Rough Specimen) Cut
Carat
Estimated 15 to 25 carats based on rough dimensions
Color
Fancy Dark Black / Opaque
Clarity
I3 / Industrial (heavy inclusion and porous structure typical of carbonado)
Shape
Rough Uncut Crystalline Aggregate
Overall Assessment
An intriguing, dark, porous carbonado rough specimen holding significant geological and mineralogical interest, distinct from traditional gem-quality transparent diamonds
Cut Quality
Not Applicable (Uncut Rough Specimen)
Brilliance
Low due to opaque and porous nature
Fire
Absent due to opaque composition
Scintillation
Minimal, reflecting off natural crystal faces and micro-facets
Proportions
Not Applicable for Rough Specimen
Symmetry
Asymmetrical Natural Rough Formation
Polish
Unpolished Natural Surface Texture
Fluorescence
None to Inert
Inclusions
Abundant micro-porosities, graphite clusters, and metallic inclusions
Blemishes
Natural surface pitting, resorption marks, and rough fractures
Origin
Alluvial deposits primarily from Brazil or the Central African Republic
Treatment Detection
No signs of artificial treatment; completely natural untreated carbonado
Estimated Value
Low to Moderate as a Mineral Specimen ($100 - $500 USD depending on exact weight and collector demand)
Certification Estimate
GIA (Gemological Institute of America) or specialized mineralogical laboratories for carbonado verification
Investment Potential
Mainly collected for mineralogical curiosity rather than gemstone investment, stable niche value
Similar Diamonds
Other carbonado or bort industrial diamond rough specimens
Setting Suggestions
Wire-wrapped in platinum or blackened sterling-silver for a raw, organic, or gothic jewelry design
Care & Maintenance
Store securely away from harder impact areas; clean gently with warm soapy water and a soft brush
Interesting Facts
Carbonados (black diamonds) are theorized by some scientists to have an extraterrestrial origin, arriving via asteroid impacts billions of years ago