Not a diamond; this specimen appears to be red glass, slag, or potentially a low-grade colored gemstone/mineral fragment like jasper or quartz with conchoidal fracture.
Not a diamond; this specimen appears to be red glass, slag, or potentially a low-grade colored gemstone/mineral fragment like jasper or quartz with conchoidal fracture. · Freeform rough / Uncut raw fragment with conchoidal fracture patterns
Not applicable (uncut raw fragment) Cut
Carat
Cannot be precisely determined visually without density testing, estimated roughly at 15-25 carats based on visible scale.
Color
Deep Vivid Red / Fancy Intense Red
Clarity
Included / Opaque to Translucent with internal stress fractures and surface weathering.
Shape
Freeform rough / Uncut raw fragment with conchoidal fracture patterns
Overall Assessment
The specimen shown in the image is definitively not a diamond. It exhibits characteristic features of red glass or industrial slag, displaying prominent conchoidal fracture lines and surface wear. Professional gemological testing (such as a thermal conductivity probe or refractive index reading) is recommended to confirm its true material composition.
Cut Quality
Not applicable (uncut raw fragment)
Brilliance
Low to moderate vitreous luster, depending on lighting
Fire
Minimal to none, characteristic of glass or non-diamond material
Scintillation
Poor due to lack of standard gemstone facets
Proportions
Not applicable
Symmetry
Asymmetrical raw mineral specimen
Polish
Unpolished natural or fractured surface
Fluorescence
Unknown (requires UV testing)
Inclusions
Internal stress cracks, bubbles (if glass), and micro-fractures
Blemishes
Surface scratches, pitting, and conchoidal fracture ripples
Origin
Synthetic/Man-made glass or natural mineral specimen, impossible to pinpoint exact geographic origin without physical testing.
Treatment Detection
Visual signs of potential molding or artificial coloration if glass, or natural fracture patterns if mineral.
Estimated Value
Minimal monetary value (decorative or specimen value only, typically under $10-$20 USD if confirmed as glass or common quartz/slag).
Certification Estimate
Not eligible for diamond certification by major gemological labs (GIA, AGS). Requires basic identification testing (refractive index, specific gravity, spectroscopy).
Investment Potential
None. This item holds no investment or resale value as a gemstone.
Similar Diamonds
None, as diamonds do not form with these conchoidal fracture patterns or red glass-like structures in nature.
Setting Suggestions
Wire-wrapped pendant setting in copper or sterling silver if used for artisan jewelry.
Care & Maintenance
Avoid harsh chemicals, ultrasonic cleaners, and sudden temperature changes, especially if it is glass or composite material.
Interesting Facts
The smooth, curved ridges visible on the surface are known as conchoidal fractures, which are typical of amorphous materials like glass and quartz when broken.