Not a diamond; this specimen appears to be a raw, unpolished mineral crystal, likely quartz or calcite, characterized by distinct prismatic cleavage and striations rather than diamond crystal habit.
Not a diamond; this specimen appears to be a raw, unpolished mineral crystal, likely quartz or calcite, characterized by distinct prismatic cleavage and striations rather than diamond crystal habit. · Rough / Raw Crystal / Uncut prismatic form
Not Applicable (uncut rough crystal) Cut
Carat
Not applicable as this is a rough mineral specimen, not a cut gemstone; estimated weight in metric carats would depend on specific gravity testing.
Color
Colorless / Near-colorless with minor surface impurities
Clarity
Included / Heavily included with internal fractures and striations
Shape
Rough / Raw Crystal / Uncut prismatic form
Overall Assessment
The specimen pictured is a raw, unpolished mineral crystal (likely quartz or calcite) rather than a diamond. It exhibits characteristic natural striations, internal fracturing, and a prismatic habit entirely inconsistent with diamond crystallography.
Cut Quality
Not Applicable (uncut rough crystal)
Brilliance
Low to moderate vitreous luster, lacking the high refractive index and dispersion of a cut diamond
Fire
Negligible, consistent with quartz or calcite rather than diamond
Scintillation
Poor, due to lack of standard gemstone facets and internal fracturing
Proportions
Elongated prismatic crystal habit with natural growth striations
Symmetry
Natural crystal symmetry showing prismatic elongation
Polish
Raw, unpolished natural surface faces
Fluorescence
Unknown without UV testing
Inclusions
Extensive internal fractures, feathers, and cloud-like inclusions typical of raw quartz or calcite
Blemishes
Natural growth marks, surface etching, and minor chipping along edges
Origin
Natural mineral specimen, likely from a pegmatite or hydrothermal vein deposit
Treatment Detection
No obvious signs of artificial treatments; appears completely natural
Estimated Value
Nominal value as a mineral specimen or educational rough stone (typically under $10-$50 depending on exact mineral ID)
Certification Estimate
Standard gemological laboratories (GIA, IGI) would identify this as quartz, calcite, or another non-diamond mineral rather than issuing a diamond grading report.
Investment Potential
None; mineral specimens of this common type are bought for aesthetic or educational purposes rather than investment
Similar Diamonds
None, as this is visually and structurally distinct from a diamond
Setting Suggestions
Not recommended for fine jewelry due to softness and lack of durability (if calcite) or lack of traditional gemstone appeal; wire-wrapping if used as a mineral specimen pendant
Care & Maintenance
Handle with care to prevent chipping along cleavage planes; avoid harsh chemicals and ultrasonic cleaning depending on the exact mineral composition
Interesting Facts
Raw mineral crystals often display natural growth features such as striations and trigons that differ completely from synthetic or cut diamond characteristics