Not a diamond; appears to be a blue glass fragment or colored mineral rough
Not a diamond; appears to be a blue glass fragment or colored mineral rough · Rough fragment, unpolished
Not applicable (raw, uncut, unpolished fragment) Cut
Carat
Estimated 2.0 to 3.5 carats equivalent based on visual size
Color
Deep royal blue (Fancy Deep Blue equivalent if applied to gemstone terminology)
Clarity
Included / Heavily included with internal bubbles typical of glass
Shape
Rough fragment, unpolished
Overall Assessment
The specimen shown is a rough, vibrant blue piece of material—most likely colored glass or industrial slag—rather than a genuine diamond or precious gemstone. Visual indicators such as the conchoidal fracture patterns and potential internal bubbles rule out diamond classification.
Cut Quality
Not applicable (raw, uncut, unpolished fragment)
Brilliance
Low due to lack of facets and glassy composition
Fire
None, glass and common minerals do not exhibit diamond-like dispersion
Scintillation
Poor, lacks standard facet patterning
Proportions
Not applicable to raw unstructured material
Symmetry
Irregular, asymmetric raw fragment
Polish
None, rough and fractured surfaces
Fluorescence
Cannot be definitively determined without UV testing, likely none to inert
Inclusions
Gas bubbles and internal fractures visible, suggesting non-crystalline glassy material
Blemishes
Surface chips, rough edges, and abrasion marks
Origin
Man-made glass or industrial slag material
Treatment Detection
Colored glass or treated material; lacks natural crystal growth structures
Estimated Value
Minimal to negligible (decorative or educational specimen value only)
Certification Estimate
Not certifiable as a gemstone by standard labs like GIA or AGS
Investment Potential
None
Similar Diamonds
None, as this is not a diamond or high-grade gemstone
Setting Suggestions
Not recommended for fine jewelry settings due to softness and material composition
Care & Maintenance
Store carefully to avoid scratching softer materials, keep away from harsh chemicals
Interesting Facts
Many untrained observers mistake blue glass or slag found outdoors for rare blue rough diamonds or sapphires