Natural Red Diamond (or potentially treated natural diamond/other red gemstone pending lab test)
Natural Red Diamond (or potentially treated natural diamond/other red gemstone pending lab test) · Rough / Uncut Crystal Fragment
Not Applicable (Rough unpolished stone) Cut
Carat
Estimated 0.85 - 1.25 carats based on visual scale
Color
Fancy Deep Red
Clarity
SI1 - SI2 (Estimated due to natural rough state and visible internal features)
Shape
Rough / Uncut Crystal Fragment
Overall Assessment
This is an extraordinarily rare and intriguing rough red crystal specimen. If verified as a natural fancy red diamond by a major laboratory like GIA, it represents a museum-quality collector's treasure of immense monetary and gemological value.
Cut Quality
Not Applicable (Rough unpolished stone)
Brilliance
Low to Moderate due to rough, unpolished state
Fire
Present internally when backlit, showing deep red spectral dispersion
Scintillation
Limited in current rough state; will improve dramatically upon professional cutting
Proportions
Non-standard; raw crystal form with natural growth lines and striations
Symmetry
Asymmetrical due to natural crystal habit and rough fracture
Polish
Unpolished natural crystal faces and fracture surfaces
Fluorescence
Moderate to Strong (Typical for certain types of natural colored diamonds)
Inclusions
Natural graining, feather fractures, and internal clouds visible
Blemishes
Natural surface etch channels, trigons, and rough cleavage planes
Origin
Likely Argyle Mine (Australia) origin or similar high-pressure tectonic environment known for colored diamonds
Treatment Detection
Advanced spectroscopic testing (FTIR, PL) needed to rule out irradiation or HPHT annealing
Estimated Value
Highly variable due to extreme rarity of natural red diamonds; easily ranges from tens of thousands to hundreds of thousands of dollars if confirmed natural fancy red
Certification Estimate
GIA Colored Diamond Report (requires advanced spectroscopic testing to confirm natural origin and color cause)
Investment Potential
Exceptionally high; natural red diamonds are among the rarest and most sought-after collector stones in the world
Similar Diamonds
Argyle Red diamonds, famous specimens like the Moussaieff Red
Setting Suggestions
Custom multi-prong platinum or 18k yellow gold basket setting designed to protect the girdle and enhance the deep red hue
Care & Maintenance
Store separately in a lined jewelry box to prevent scratching other stones; ultrasonic cleaning should be avoided until internal inclusion stability is verified
Interesting Facts
Natural pure red diamonds are so rare that fewer than 30 true fancy red diamonds with significant size are known to exist globally