Rough Crystal (Likely Glass/Quartz Simulant)
Rough Crystal (Likely Glass/Quartz Simulant) · Uncut Rough / Fragmented
None (Raw material) Cut
Carat
5-10 carats (Estimated based on finger scale)
Color
Colorless / Slight Gray Tint
Clarity
Included (Contains visible fractures and lines)
Shape
Uncut Rough / Fragmented
Overall Assessment
The specimen displays physical characteristics inconsistent with diamond. The fracture patterns and lack of characteristic adamantine luster strongly suggest this is a piece of glass cullet or a quartz fragment rather than a gemstone.
Cut Quality
None (Raw material)
Brilliance
Low (Surface reflections only, no internal light return)
Fire
Low (Minimal spectral dispersion)
Scintillation
Negligible
Proportions
N/A (Non-geometric structure)
Symmetry
None (Irregular shape)
Polish
Natural / Rough surface
Fluorescence
Indeterminate from image
Inclusions
Conchoidal fracture lines, large internal veining, and surface pitting
Blemishes
Heavy surface texture, jagged edges, and chips
Origin
Man-made glass fragment or mineral quartz
Treatment Detection
N/A (Material appears to be industrial or naturally occurring silicate)
Estimated Value
$5 - $20 (If glass/quartz); negligible market value as a diamond simulant
Certification Estimate
Unlikely to be certified by GIA/AGS as a diamond; potentially identified as glass or quartz by GIA Gem Identification report
Investment Potential
None
Similar Diamonds
Rough Herkimer Diamonds (Quartz) or glass cullet
Setting Suggestions
Not recommended for jewelry setting without significant lapidary work
Care & Maintenance
Avoid impact; if glass, edges may be sharp and prone to shattering
Interesting Facts
The conchoidal (shell-like) fractures visible on the surface are a hallmark of glass or amorphous silica, rather than the octahedral cleavage typically found in raw diamonds.