Not a diamond; appears to be quartz crystal, glass, or another crystalline mineral showing prominent conchoidal fracture and growth striations rather than octahedral diamond crystal habit.
Not a diamond; appears to be quartz crystal, glass, or another crystalline mineral showing prominent conchoidal fracture and growth striations rather than octahedral diamond crystal habit. · Raw, uncut crystal / Irregular rough nugget
Uncut / Rough (Not applicable for standard cut grades) Cut
Carat
Estimated 15-25 carats (if mineral, exact weight requires scale measurement)
Color
Colorless / Near colorless (I-J equivalent if applied to gemstone)
Clarity
Included / SI2-I1 equivalent due to internal striations and surface features
Shape
Raw, uncut crystal / Irregular rough nugget
Overall Assessment
Visual analysis indicates this is a raw mineral specimen (likely quartz or glass) rather than a genuine diamond. It lacks the adamantine luster, crystal habit, and optical properties characteristic of diamond.
Cut Quality
Uncut / Rough (Not applicable for standard cut grades)
Brilliance
Vitreous luster typical of raw quartz or glass, lacks true diamond adamantine luster
Fire
Minimal to none, lacks diamond's high dispersion
Scintillation
Low, limited light return due to rough, unfaceted surface
Proportions
Irregular natural proportions
Symmetry
Asymmetrical raw crystal form
Polish
Natural rough surface / Unpolished
Fluorescence
Unknown (requires UV testing)
Inclusions
Internal growth lines, striations, and stress fractures visible
Blemishes
Natural surface etching and rough patches
Origin
Natural mineral specimen or man-made glass simulants
Treatment Detection
No obvious artificial treatments visible in raw form, though visual inspection alone is inconclusive
Estimated Value
Minimal monetary value as a gemstone (decorative mineral specimen value only)
Certification Estimate
Standard gemological laboratories (GIA, IGI) would issue a mineral identification report rather than a diamond grading report, likely identifying it as quartz or glass.
Investment Potential
None as an investment gemstone
Similar Diamonds
None (this specimen does not share optical or physical properties with diamond)
Setting Suggestions
Wire-wrapped rough mineral setting or custom organic bezel if kept as a raw specimen
Care & Maintenance
Standard mineral care; avoid harsh chemicals and impact to prevent fracturing along cleavage/fracture planes
Interesting Facts
Displays clear conchoidal fracture patterns which are commonly mistaken for diamond rough by untrained observers