Not a diamond; appears to be raw quartz, glass, or another silicate mineral featuring conchoidal fracture patterns
Not a diamond; appears to be raw quartz, glass, or another silicate mineral featuring conchoidal fracture patterns · Rough uncut shard / Raw mineral specimen
Not applicable (uncut raw crystal/shard) Cut
Carat
Not applicable for rough non-diamond mineral
Color
Colorless to faint brownish tint
Clarity
Included (contains internal fractures and striations)
Shape
Rough uncut shard / Raw mineral specimen
Overall Assessment
The specimen shown in the image is a raw, unpolished crystalline shard with distinct conchoidal fracture patterns, characteristic of quartz or similar silicates rather than diamond.
Cut Quality
Not applicable (uncut raw crystal/shard)
Brilliance
Low due to lack of standard facet proportions
Fire
Low to minimal dispersion
Scintillation
Poor due to irregular, unfaceted surfaces
Proportions
Not applicable
Symmetry
Asymmetrical raw fragment
Polish
Unpolished natural fracture surfaces
Fluorescence
Unknown / Not tested
Inclusions
Conchoidal fracture lines, internal stress cracks, and minor mineral inclusions
Blemishes
Natural surface roughness and chippings
Origin
Natural mineral occurrence (exact geographic origin unknown)
Treatment Detection
No obvious signs of artificial treatments visible from visual inspection
Estimated Value
Nominal value as a raw mineral specimen
Certification Estimate
Gemological laboratories would not issue a diamond grading report for this specimen; standard mineralogical identification certificate only
Investment Potential
None as an investment gemstone
Similar Diamonds
None (this is not a diamond)
Setting Suggestions
Wire-wrapped or organic bezel setting suitable for raw mineral specimens
Care & Maintenance
Store separately to prevent scratching softer materials; clean with mild soapy water and a soft brush
Interesting Facts
The curved, shell-like fracture lines visible on the surface are known as conchoidal fractures, commonly found in quartz, glass, and certain other minerals.