Natural Diamond (Rough Crystal)
Natural Diamond (Rough Crystal) · Rough Crystal / Octahedral Fragment
Not Applicable (Uncut Rough) Cut
Carat
Estimated 0.75 - 1.25 carats
Color
Fancy Vivid Red / Orange-Red
Clarity
Included (I1-I2 range based on internal fractures visible in rough state)
Shape
Rough Crystal / Octahedral Fragment
Overall Assessment
An exceptionally rare natural rough crystal displaying a vivid red or reddish-orange body color, highly prized by collectors if confirmed as a natural fancy red diamond.
Cut Quality
Not Applicable (Uncut Rough)
Brilliance
Low due to unpolished rough surface and heavy internal inclusions
Fire
Obscured by rough surfaces, though strong red body color dominates
Scintillation
Minimal until faceted and polished
Proportions
Natural uncut crystal morphology
Symmetry
Natural crystalline symmetry (distorted octahedron)
Polish
Natural rough crystal faces (trigons potentially present)
Fluorescence
Cannot be definitively determined without UV testing, likely inert to medium yellow
Inclusions
Internal fracture planes, feathers, and potential carbon spots
Blemishes
Natural surface etching, rough skin, and possible trigons
Origin
Likely alluvial or primary kimberlite pipe origin (Argyle mine historically famous for reds)
Treatment Detection
Requires advanced laboratory testing to rule out irradiation or HPHT treatment
Estimated Value
Highly variable due to rarity; natural red diamonds command extreme premiums, potentially $10,000 - $50,000+ per carat if confirmed natural color
Certification Estimate
GIA Colored Diamond Report (requires advanced spectroscopic testing for natural red origin)
Investment Potential
Extremely high due to extreme rarity of natural red diamonds, provided origin is certified
Similar Diamonds
Argyle red rough diamonds, naturally irradiated fancy red diamonds
Setting Suggestions
Custom bezel or prong setting in yellow or rose gold to complement and secure the raw crystal shape
Care & Maintenance
Store separately to prevent scratching other gemstones; avoid harsh ultrasonic cleaners due to internal fractures
Interesting Facts
Natural red diamonds are among the rarest colored diamonds in the world, with fewer than 30 true fancy red diamonds known to exist with significant size