Rough Mineral Crystal / Quartz (Not a Diamond)
Rough Mineral Crystal / Quartz (Not a Diamond) · Rough Crystal Fragment / Trigonal Prism
Not Applicable (Rough un-cut mineral specimen) Cut
Carat
Estimated 15-20 carats (based on rough mineral volume)
Color
Colorless / Transparent
Clarity
Included / SI (due to internal fractures and irregular crystal structure)
Shape
Rough Crystal Fragment / Trigonal Prism
Overall Assessment
Visual examination strongly indicates this is a raw mineral crystal (such as clear quartz) rather than a diamond. It lacks the adamantine luster, high refractive index, and cubic crystal habit typical of rough diamonds.
Cut Quality
Not Applicable (Rough un-cut mineral specimen)
Brilliance
Vitreous to sub-adamantine luster, moderate light return on smooth fracture planes
Fire
Low dispersion, typical of quartz or silicate minerals rather than diamond
Scintillation
Minimal due to lack of standard diamond faceting
Proportions
Natural rough formation, non-standard geometric proportions
Symmetry
Natural Irregular Crystal Growth
Polish
Raw Natural Crystalline Faces / Conchoidal Fracture Surfaces
Fluorescence
None to Faint
Inclusions
Internal feather fractures, gas bubbles or fluid inclusions characteristic of natural quartz or glass slag
Blemishes
Natural surface etching lines, growth lines, and rough conchoidal fracture rims
Origin
Natural geological mineral formation (likely quartz or hydrothermal vein deposit)
Treatment Detection
No visible signs of modern lab enhancement; raw natural state
Estimated Value
Nominal mineral specimen value ($10 - $50 USD depending on exact mineral composition)
Certification Estimate
Not eligible for GIA/AGS diamond grading; requires geological testing (e.g., GIA Colored Stone or Mineral ID report)
Investment Potential
Low investment value; valued primarily as a raw mineral specimen or educational piece
Similar Diamonds
None, as this is visually identified as quartz crystal or raw silicate glass rather than crystalline carbon
Setting Suggestions
Wire-wrapped raw mineral setting or custom organic bezel mount in sterling silver
Care & Maintenance
Avoid harsh acids, ultrasonic cleaners, and hard impacts to prevent cleavage along natural fracture lines
Interesting Facts
The specimen displays classic conchoidal fracture patterns and natural crystal faces reminiscent of quartz growth habits