Not a diamond; appears to be industrial carbonado (black diamond rough) or slag/obsidian material based on the vitreous luster and fracture pattern
Not a diamond; appears to be industrial carbonado (black diamond rough) or slag/obsidian material based on the vitreous luster and fracture pattern · Rough / Uncut crystal fragment
Not Applicable (Rough crystal) Cut
Carat
Undetermined without precise dimensions, approximately 2-5 carats based on visual scale
Color
Fancy Dark Black / Opaque
Clarity
Included (I3 equivalent for rough material with heavy internal inclusions and fractures)
Shape
Rough / Uncut crystal fragment
Overall Assessment
An interesting raw carbon or industrial rough specimen showcasing natural fracture patterns and dark coloration, suitable for collection rather than jewelry use
Cut Quality
Not Applicable (Rough crystal)
Brilliance
Low due to opaque nature and rough state
Fire
None visible due to opacity
Scintillation
Minimal, localized vitreous reflection on polished or naturally cleaved facets
Proportions
Not Applicable
Symmetry
Asymmetrical rough formation
Polish
Natural rough surface with some conchoidal fracture highlights
Fluorescence
Indeterminate
Inclusions
Heavy internal clouding, mineral grains, and extensive fracturing visible
Blemishes
Natural surface pits, fractures, and rough texture
Origin
Natural alluvial or primary deposit source
Treatment Detection
None detected; Appears completely untreated in its rough state
Estimated Value
Nominal value as mineral specimen or low-grade industrial material ($20 - $100)
Certification Estimate
GIA or similar major labs would classify as rough industrial diamond or carbonado if verified
Investment Potential
Low investment potential; primarily of interest as a mineral specimen rather than a gemstone
Similar Diamonds
Other low-grade carbonado rough or industrial bort diamonds
Setting Suggestions
Wire-wrapped rough stone pendant or bespoke organic bezel setting in sterling silver or blackened gold
Care & Maintenance
Store separately to avoid scratching softer gems; clean gently with warm soapy water and a soft brush
Interesting Facts
Carbonado diamonds are theorized by some scientists to have an extraterrestrial origin due to their unique porous structure and nitrogen isotopes