Likely Quartz, Glass, or Alternative Mineral (Not a Genuine Diamond)
Likely Quartz, Glass, or Alternative Mineral (Not a Genuine Diamond) · Rough, uncut, irregular crystal or fragment
Uncut / Rough (Not applicable for a faceted cut scale) Cut

Carat
Estimated 8-15 carats (volumetric equivalent, depending on specific gravity)
Color
Colorless to very faint yellowish-green tint
Clarity
Included / Imperfect (visible internal structures and inclusions)
Shape
Rough, uncut, irregular crystal or fragment
Overall Assessment
The specimen held in the image lacks the key optical properties (adamantine luster, high dispersion, and crystal habit) of a genuine diamond, and is visually consistent with a piece of raw quartz, beryl, or translucent glass.
Cut Quality
Uncut / Rough (Not applicable for a faceted cut scale)
Brilliance
Low to moderate vitreous luster, not possessing true diamond adamantine luster
Fire
Minimal to none, lacks the high dispersion characteristic of diamond
Scintillation
Poor, due to lack of facets and optical geometry
Proportions
Non-standard, irregular raw crystal dimensions
Symmetry
Asymmetrical, natural or broken fragment morphology
Polish
Raw, unpolished surface texture with possible weathering
Fluorescence
Indeterminate from visual assessment alone
Inclusions
Internal fractures, cloudiness, and structural striations
Blemishes
Surface pitting, chips, and irregular weathering marks
Origin
Alluvial pebble, beach glass, or common raw mineral specimen
Treatment Detection
No signs of modern enhancement; appears as found in nature or as manufactured glass
Estimated Value
Nominal to low value ($5 - $50 depending on exact mineral identification)
Certification Estimate
Standard gemological laboratories (GIA, IGI) would issue a report identifying it as quartz or glass rather than diamond
Investment Potential
None; ornamental or collector curiosity value only
Similar Diamonds
None, as genuine rough diamonds display distinct crystal habits (octahedrons) and adamantine luster
Setting Suggestions
Wire-wrapped raw stone pendant or custom organic bezel setting
Care & Maintenance
Standard cleaning with mild soap, warm water, and a soft brush
Interesting Facts
Many transparent stones found near waterways are often mistaken for rough diamonds by casual finders