Not a diamond; this is a piece of green glass, possibly industrial slag or recycled glass, displaying conchoidal fracture and gas bubbles.
Not a diamond; this is a piece of green glass, possibly industrial slag or recycled glass, displaying conchoidal fracture and gas bubbles. · Raw, uncut, and unpolished irregular shard with conchoidal fracture patterns.
Not applicable (raw, naturally broken or factory slag piece with no standard gemstone facets). Cut

Carat
Not applicable for glass (estimated weight of the fragment is approximately 15-20 carats if measured in gem weight equivalent).
Color
Vivid deep green (Fancy Dark Green in gemstone terms, but purely a glass material).
Clarity
Included / Heavily flawed due to numerous gas bubbles, internal impurities, and particulate matter.
Shape
Raw, uncut, and unpolished irregular shard with conchoidal fracture patterns.
Overall Assessment
The specimen is definitively identified as green glass, not a diamond or any other precious gemstone. It exhibits characteristic features of manufactured glass such as conchoidal fractures and internal gas bubbles.
Cut Quality
Not applicable (raw, naturally broken or factory slag piece with no standard gemstone facets).
Brilliance
Low to moderate vitreous luster, distinct from the adamantine luster of a genuine diamond.
Fire
Minimal to none; glass lacks the high refractive index and dispersion value of diamond.
Scintillation
Poor scintillation due to lack of facet arrangement and internal bubble diffusion.
Proportions
Irregular proportions with no standard crown, pavilion, or table percentages.
Symmetry
Asymmetrical, completely lacking geometric symmetry.
Polish
Raw, unpolished surfaces with natural fracture gloss rather than lapidary polish.
Fluorescence
Inert to mild green under UV light, typical of some glass compositions.
Inclusions
Numerous spherical and elongated gas bubbles, trapped particulate impurities, and swirling flow lines common in manufactured glass.
Blemishes
Surface pitting, abrasion marks, chips along the edges, and minor weathering.
Origin
Synthetic/Man-made glass (industrial slag or decorative cullet glass).
Treatment Detection
No treatments applied; the material is entirely artificial glass by nature.
Estimated Value
Nominal or negligible monetary value (decorative or educational specimen only).
Certification Estimate
Not eligible for certification by major gemological laboratories (GIA, AGS, IGI) as a diamond.
Investment Potential
Zero investment or resale potential.
Similar Diamonds
None; no diamond visually resembles this glass fragment.
Setting Suggestions
Not suitable for fine jewelry settings due to low durability (softness of glass); wire-wrapping could be used for novelty crafts.
Care & Maintenance
Store separately to avoid scratching softer materials, clean with mild soapy water and a soft cloth, avoid harsh chemicals and high impact.
Interesting Facts
Glass slag is frequently mistaken by novices for rough gemstones like emerald, peridot, or colored diamond due to its rich color and vitreous appearance.