Natural (Fancy Colored Diamond - Red Diamond)
Natural (Fancy Colored Diamond - Red Diamond) · Rough / Uncut Octahedral Crystal Fragment
Not Applicable (Rough crystal specimen) Cut
Carat
Estimated 0.45 to 0.65 carats
Color
Natural Fancy Red
Clarity
SI1 - SI2 (Included due to visible dark inclusions and internal fractures)
Shape
Rough / Uncut Octahedral Crystal Fragment
Overall Assessment
An extraordinary and extremely rare specimen of a natural red rough diamond. Its intense coloration makes it a museum-quality or high-tier investment piece, provided its natural origin and untreated nature are confirmed by a major laboratory like GIA.
Cut Quality
Not Applicable (Rough crystal specimen)
Brilliance
Subdued due to rough surface and heavy color saturation
Fire
Masked by the intense natural red body color
Scintillation
Limited flash effect across unpolished natural crystal faces
Proportions
Natural rough morphology; depth and table percentages do not apply
Symmetry
Natural crystalline symmetry, distorted octahedral form
Polish
Natural crystal faces, unpolished rough stone
Fluorescence
Medium to Strong Blue (common in many natural colored diamonds)
Inclusions
Visible dark carbon spots and internal feather fractures
Blemishes
Natural surface trigons, etching features, and minor surface abrasions
Origin
Likely Argyle Mine (Australia) or alluvial deposits in Africa/Brazil
Treatment Detection
No obvious signs of artificial irradiation or coating; natural origin suspected
Estimated Value
Extremely high due to extreme rarity of natural red diamonds ($50,000 - $150,000+ per carat depending on exact saturation)
Certification Estimate
GIA (Gemological Institute of America) - Natural Fancy Red classification
Investment Potential
Exceptional; natural red diamonds are among the rarest and most sought-after collector stones in the world
Similar Diamonds
Argyle-origin natural red or purplish-red rough and cut diamonds
Setting Suggestions
High-security custom bezel or prong setting in platinum or 18k yellow gold to contrast the vivid red
Care & Maintenance
Store separately in a fabric-lined box; avoid harsh ultrasonic cleaners due to internal fracture risks
Interesting Facts
Natural red diamonds are the rarest of all colored diamonds, with fewer than 30 true fancy red diamonds known to exist worldwide with significant size