Not a diamond; this is green glass or slag glass, commonly referred to as sea glass or bottle glass.
Not a diamond; this is green glass or slag glass, commonly referred to as sea glass or bottle glass. · Irregular raw shard, unshaped/uncut
Poor / Raw fracture (conchoidal fracture without gemstone faceting) Cut
Carat
Not applicable to glass; visual mass suggests approximately 15-20 carats equivalent in weight.
Color
Vivid green / Fancy intense green
Clarity
Inincluded with numerous internal gas bubbles and flow lines typical of manufactured glass
Shape
Irregular raw shard, unshaped/uncut
Overall Assessment
The specimen shown in the image is not a diamond or a gemstone, but rather a fragment of green glass with visible gas bubbles and conchoidal fracture patterns.
Cut Quality
Poor / Raw fracture (conchoidal fracture without gemstone faceting)
Brilliance
Low to moderate vitreous luster
Fire
None (glass lacks the high refractive index and dispersion of diamond)
Scintillation
Poor, lacking facet-based light return
Proportions
Not applicable (raw amorphous shard)
Symmetry
Asymmetric
Polish
Unpolished natural fracture surface with localized weathering
Fluorescence
None to inert
Inclusions
Abundant rounded gas bubbles, swirl marks, and impurities typical of glass manufacture
Blemishes
Surface scratches, chips, and conchoidal fractures along the edges
Origin
Man-made glass (discarded glass container, bottle, or industrial slag)
Treatment Detection
Not applicable; colored via metallic oxide additives during glass production
Estimated Value
Nominal / Zero monetary value as a gemstone (decorative or collectible as beach glass)
Certification Estimate
Not certifiable as a gemstone by standard gemological laboratories (GIA/AGS/IGI)
Investment Potential
None as an investment asset
Similar Diamonds
None, as this is completely distinct from diamond mineralogically
Setting Suggestions
Wire-wrapping or bezel setting if used for craft or artistic jewelry
Care & Maintenance
Standard cleaning with warm soapy water and a soft brush; avoid harsh impacts to prevent chipping
Interesting Facts
Green glass is often colored using chromium or iron oxides. The presence of internal round bubbles is a definitive diagnostic feature distinguishing glass from natural crystalline gemstones.