Not a diamond; this specimen appears to be industrial slag glass or raw quartz crystal showing conchoidal fracture patterns characteristic of glass rather than crystalline diamond growth.
Not a diamond; this specimen appears to be industrial slag glass or raw quartz crystal showing conchoidal fracture patterns characteristic of glass rather than crystalline diamond growth. · Irregular raw chunk / rough fragment with conchoidal fractures
Uncut raw material with no standard faceting Cut

Carat
Not applicable as this is not a gemstone diamond; weight must be measured in grams.
Color
Colorless to slightly tinted transparent material
Clarity
Not applicable; contains numerous internal bubbles, flow lines, and fractures characteristic of glass
Shape
Irregular raw chunk / rough fragment with conchoidal fractures
Overall Assessment
This specimen is conclusively identified as glass or quartz exhibiting conchoidal fracture, not a diamond or precious gemstone.
Cut Quality
Uncut raw material with no standard faceting
Brilliance
Vitreous luster typical of glass
Fire
Very low to none, lacks the high dispersion of diamond
Scintillation
Minimal to none due to lack of standard facets
Proportions
Irregular and non-standard
Symmetry
Asymmetrical raw fragment
Polish
Unpolished natural or fractured surface
Fluorescence
Cannot be determined without UV testing
Inclusions
Gas bubbles and internal stress fractures typical of manufactured glass
Blemishes
Surface chips, rough edges, and uneven texture
Origin
Synthetic industrial byproduct or decorative glass
Treatment Detection
No enhancements, standard glass composition
Estimated Value
Minimal monetary value as decorative or industrial scrap glass
Certification Estimate
Cannot be certified as a diamond by major gemological laboratories like GIA or IGI
Investment Potential
None
Similar Diamonds
None, as this is glass rather than diamond
Setting Suggestions
Not suitable for fine jewelry settings
Care & Maintenance
Standard handling; avoid harsh impacts to prevent chipping
Interesting Facts
Conchoidal fracture surfaces on glass often mimic the appearance of raw quartz or rough diamond to untrained observers.