Rough quartz or natural glass specimen, not a gem-quality diamond
Rough quartz or natural glass specimen, not a gem-quality diamond · Irregular raw crystal fragment / unpolished slice
Uncut / Raw crystal with conchoidal fracture lines Cut
Carat
Estimated at approximately 15-20 carats based on visible scale
Color
Near colorless to light grey-brown tint
Clarity
Included / Imperfect (I3 equivalent if graded)
Shape
Irregular raw crystal fragment / unpolished slice
Overall Assessment
The specimen shown is a raw, unpolished mineral fragment (likely quartz or natural glass) displaying prominent conchoidal fractures and striations, rather than a genuine diamond.
Cut Quality
Uncut / Raw crystal with conchoidal fracture lines
Brilliance
Minimal, limited by lack of facets and surface texture
Fire
Negligible due to raw state and material properties
Scintillation
Poor; surface scattering rather than internal facet reflection
Proportions
Non-standard raw formation; lacks traditional table and pavilion angles
Symmetry
Asymmetrical raw mineral fragment
Polish
Raw / Unpolished with natural fracture surfaces and striations
Fluorescence
Indeterminate without UV testing equipment
Inclusions
Heavy internal feather fractures, mineral impurities, and cloudiness
Blemishes
Rough surface textures, chipping, and natural growth striations
Origin
Natural terrestrial mineral formation
Treatment Detection
No obvious artificial treatments detected; natural raw state
Estimated Value
Nominal decorative or mineral specimen value (under $20)
Certification Estimate
Not applicable for grading labs like GIA as a diamond; could receive mineral identification from GIA or similar gemological institutes
Investment Potential
None as an investment gemstone; strictly a specimen or educational piece
Similar Diamonds
None, as this specimen visually exhibits characteristics of quartz, glass, or raw silicate rather than diamond crystal morphology
Setting Suggestions
Wire-wrapped pendant setting or raw mineral display piece
Care & Maintenance
Handle with care to prevent chipping along cleavage and fracture planes; clean with mild soapy water
Interesting Facts
Displays prominent conchoidal fracture patterns and natural striations common in crystalline minerals