Not a diamond; this is a rough green gemstone, likely glass or a green mineral such as tourmaline or tsavorite garnet, but definitively not carbon-based diamond.
Not a diamond; this is a rough green gemstone, likely glass or a green mineral such as tourmaline or tsavorite garnet, but definitively not carbon-based diamond. · Rough uncut crystal / irregular chunk
Not Applicable (Uncut rough specimen) Cut

Carat
Estimated 8-12 carats based on relative finger size, though density of the specific mineral applies
Color
Vivid Green / Fancy Intense Green
Clarity
Included / Heavily Included (SI2-I1 equivalent based on internal fractures)
Shape
Rough uncut crystal / irregular chunk
Overall Assessment
An interesting green rough crystal specimen that is definitely not a diamond, requiring professional gemological testing (refractive index and hardness) to confirm exact mineral identity.
Cut Quality
Not Applicable (Uncut rough specimen)
Brilliance
Low due to lack of standard facet geometry and rough surface texture
Fire
Minimal dispersion observed in current rough state
Scintillation
Limited, reflecting light irregularly off fracture planes
Proportions
Not applicable to rough stones
Symmetry
Asymmetrical natural rough form
Polish
Raw, unpolished natural crystal surfaces and fracture planes
Fluorescence
Indeterminate without UV testing
Inclusions
Internal fractures, feather-like inclusions, and possible mineral debris visible
Blemishes
Natural rough surface irregularities, chips, and striations
Origin
Natural rough mineral deposit origin or synthetic glass production
Treatment Detection
Visual inspection suggests raw unworked state, though specific tests needed for fracture filling or coloring agents
Estimated Value
Nominal value depending on actual mineral species (if glass, negligible; if high-grade tsavorite/tourmaline rough, moderate value)
Certification Estimate
GIA or local gemological laboratory would classify this as non-diamond rough gemstone
Investment Potential
Low to negligible as an investment piece unless verified as a high-value rare colored gemstone rough
Similar Diamonds
None, as this specimen is not a diamond
Setting Suggestions
Wire-wrapped pendant or custom organic prong setting suitable for rough minerals
Care & Maintenance
Store separately to avoid scratching softer materials and protect from harsh impacts due to internal fractures
Interesting Facts
Green rough stones are often mistaken by amateurs for diamonds due to high-index luster, but lack diamond hardness and crystal habit