Natural Rough Crystal (Potential Macle or Elongated)
Natural Rough Crystal (Potential Macle or Elongated) · Uncut / Rough Crystal
N/A (Rough gemstone) Cut
Carat
Estimated 1.5 - 2.5 carats based on finger scale
Color
Likely J-L range (shows faint warm/yellowish undertones)
Clarity
Estimated SI1-I1 (visible internal growth lines and fractures)
Shape
Uncut / Rough Crystal
Overall Assessment
This is an authentic natural rough diamond crystal. It appears to have a relatively high level of internal strain and significant inclusions, which would result in a lower yield if faceted, but makes for an excellent mineralogical collector specimen.
Cut Quality
N/A (Rough gemstone)
Brilliance
Low (typical for unpolished rough)
Fire
Low (light dispersion is blocked by internal inclusions and rough surface)
Scintillation
Minimal (restricted to surface reflection)
Proportions
Elongated habit with visible trigons and growth steps
Symmetry
N/A (Natural asymmetric crystal structure)
Polish
N/A (Rough natural surface)
Fluorescence
Cannot be determined without UV light
Inclusions
Visible feathers, internal cleavage planes, and dark mineral spots
Blemishes
Natural surface etchings and abrasions from extraction
Origin
Likely alluvial or volcanic source (e.g., Africa or Arkansas)
Treatment Detection
No visible signs of treatment; appears to be raw earth-mined
Estimated Value
$150 - $450 (Value is largely based on yield potential after cutting)
Certification Estimate
GIA Rough Diamond Grading or Rough Diamond Origin Report
Investment Potential
Low to Medium (Speculative based on potential finished yield)
Similar Diamonds
Uncut Cape-series rough crystals
Setting Suggestions
Rough diamond specimen setting or custom bezel ring to preserve organic look
Care & Maintenance
Ultrasonic cleaning is discouraged due to visible internal fractures
Interesting Facts
Rough diamonds often show 'trigons', which are triangular pits on the surface caused by chemical etching in the earth's mantle