Natural rough crystal / Uncut mineral fragment
Natural rough crystal / Uncut mineral fragment · Rough uncut crystal / Irregular shape
Not applicable (Rough stone) Cut
Carat
Estimated 25 to 40 carats (rough)
Color
Near-colorless to light yellow / K-M range
Clarity
I2 to I3 (Included rough with heavy surface etching and internal inclusions)
Shape
Rough uncut crystal / Irregular shape
Overall Assessment
This specimen is a large, natural rough crystal fragment showing classic surface textures like striations and etching. While impressive in size, its heavy inclusions and irregular form place it in the industrial or lower gem-quality category, making it more suitable as a mineral specimen than a high-end faceted gemstone.
Cut Quality
Not applicable (Rough stone)
Brilliance
Low due to rough surface and lack of faceting
Fire
Minimal due to unpolished and textured surface
Scintillation
None present in current rough state
Proportions
Not applicable (Rough stone, requires custom cutting planning)
Symmetry
Natural crystal symmetry (distorted octahedral/dodecahedral growth lines)
Polish
Natural unpolished crystal faces (trigons and striations visible)
Fluorescence
Cannot be definitively determined without UV testing (likely none to faint)
Inclusions
Abundant internal crystal inclusions, fractures, and cloudiness
Blemishes
Natural surface etching, striations, pits, and rough fracture marks
Origin
Alluvial or primary kimberlite rough deposit (exact location unknown)
Treatment Detection
No treatments detected; appears to be completely untreated natural rough
Estimated Value
Low commercial value as rough gemstone material (industrial or specimen grade, $100 - $500 depending on actual weight and material verification)
Certification Estimate
GIA or similar major lab would issue a rough stone report or decline grading until cut
Investment Potential
Low investment potential as a gemstone; primarily of interest as a mineral specimen or educational piece
Similar Diamonds
Industrial grade or low-quality gem rough diamonds of similar size
Setting Suggestions
Raw mineral specimen display mount, or custom-cut into a large freeform or traditional faceted shape set in yellow gold or platinum
Care & Maintenance
Handle with care to prevent further fracturing along natural cleavage planes; clean gently with warm soapy water and a soft brush
Interesting Facts
The surface features visible on the stone, such as triangular growth marks called trigons, are characteristic of natural diamond crystal growth