Rough Crystal (Likely Quartz or Glass, Not Diamond)
Rough Crystal (Likely Quartz or Glass, Not Diamond) · Rough / Uncut
N/A (Uncut specimen) Cut
Carat
Indeterminate (Visual suggests several carats)
Color
Colorless to Near-Colorless
Clarity
Highly Included / Heavily Fractured
Shape
Rough / Uncut
Overall Assessment
This specimen appears to be a piece of fractured quartz or glass rather than a diamond. It lacks the characteristic octahedral growth habits and sub-adamantine luster of rough diamond, exhibiting instead conchoidal or irregular fracturing.
Cut Quality
N/A (Uncut specimen)
Brilliance
Low (typical of low refractive index materials)
Fire
High local dispersion at fracture sites (rainbow effect)
Scintillation
Low (mostly surface reflection)
Proportions
Unstructured / Natural cleavage planes
Symmetry
Poor / Asymmetrical
Polish
N/A (Natural/Rough surface)
Fluorescence
Cannot be determined from image
Inclusions
Extensive internal fractures, feathers, and potential mineral inclusions (black specks)
Blemishes
Chipped edges, abrasions, and stepped growth/fracture patterns
Origin
Likely terrestrial mineral (Quartz) or anthropogenic (Glass/Cullet)
Treatment Detection
None obvious beyond mechanical fracturing
Estimated Value
Low (Specimen value only, $5 - $50)
Certification Estimate
Likely would not be graded by GIA as a diamond; GIA Gem Identification Report recommended
Investment Potential
Very Low
Similar Diamonds
None; this specimen lacks the adamantine luster and crystal structure of diamond
Setting Suggestions
Wire-wrapped jewelry or specimen collection box
Care & Maintenance
Avoid ultrasonic cleaners and high heat to prevent fracture expansion
Interesting Facts
The rainbow effect seen is likely 'thin-film interference' or dispersion occurring along internal fracture planes.