Natural rough diamond crystal, likely gem-quality octahedron form with natural crystal faces (octahedral crystal habit)
Natural rough diamond crystal, likely gem-quality octahedron form with natural crystal faces (octahedral crystal habit) · Uncut octahedral rough crystal showing natural geometric crystal faces and modified edges
Not applicable as this is an uncut rough crystal rather than a faceted gem Cut
Carat
Estimated between 1.50 to 2.50 carats based on visual proportions held between fingers
Color
Estimated near-colorless to faint yellow (approx. G-J range on D-Z scale)
Clarity
Included (approx. I1-I2 equivalent), showing notable internal dark inclusion clusters visible near one corner
Shape
Uncut octahedral rough crystal showing natural geometric crystal faces and modified edges
Overall Assessment
An intriguing, natural uncut diamond crystal displaying classic octahedral geometry and a notable internal inclusion, ideal for mineral collectors or custom organic jewelry design
Cut Quality
Not applicable as this is an uncut rough crystal rather than a faceted gem
Brilliance
Moderate vitreous luster from natural crystal faces, though lower than a properly cut faceted diamond
Fire
Limited dispersion visible primarily through natural windowing of the rough crystal
Scintillation
Minimal standard sparkle due to the lack of precision-cut facets; reflection limited to broad crystal planes
Proportions
Natural crystallographic proportions rather than faceted gemstone depth and table percentages
Symmetry
Natural octahedral symmetry with characteristic curved crystal faces (trigons potentially present under magnification)
Polish
Natural crystal face texture with typical growth striations and triangular markings (trigons), non-polished
Fluorescence
Cannot be definitively determined without UV testing, but likely none to faint blue
Inclusions
Prominent dark crystal inclusion clustered near the edge/corner, alongside internal feather-like fractures
Blemishes
Natural surface pitting, triangular growth depressions (trigons), and natural skin characteristics typical of rough stones
Origin
Likely natural primary deposit (kimberlite pipe origin, potentially African, Canadian, or Russian origin)
Treatment Detection
No treatments detected; completely untreated natural rough specimen straight from the earth
Estimated Value
Rough industrial to lower-tier gem value, approximately $1,000 to $3,000 USD depending on exact weight and cutting yield
Certification Estimate
GIA or EGL rough report evaluating weight, measurements, and natural origin without standard cut grading
Investment Potential
Collectible mineral specimen value rather than traditional investment-grade polished diamond potential
Similar Diamonds
Other natural gem-quality rough diamond octahedrons and unworked crystal specimens
Setting Suggestions
Best preserved as a raw mineral specimen, or securely mounted in a custom organic bezel or cage setting to highlight its natural octahedral form
Care & Maintenance
Store separately in a padded gem jar to avoid scratching other stones or damaging the natural crystal edges
Interesting Facts
The octahedron is the most common and classic crystal habit for natural diamond formation deep within the Earth's mantle