Non-diamond mineral (Quartz or Calcite Geode)
Non-diamond mineral (Quartz or Calcite Geode) · Natural Uncut Crystal (Rough)
Uncut/Raw Cut
Carat
Indeterminate (Embedded in host rock)
Color
Translucent to Opaque White/Tan
Clarity
Included/Opaque (Not applicable to gem grade)
Shape
Natural Uncut Crystal (Rough)
Overall Assessment
This is a natural mineral geode or vug containing quartz or calcite crystals within a host rock. It does not possess the crystal structure, luster, or refractive index of a diamond.
Cut Quality
Uncut/Raw
Brilliance
Low (Mineral luster rather than adamantine)
Fire
None visible
Scintillation
Low (Surface reflections only)
Proportions
Irregular natural crystal habit
Symmetry
None (Natural growth)
Polish
Unpolished (Naturally matte/rough)
Fluorescence
Unknown without UV testing
Inclusions
Visible mineral matrix, iron staining, and host rock fragments
Blemishes
Natural fracturing and surface weathering
Origin
Likely sedimentary or volcanic host rock (Geode formation)
Treatment Detection
No evidence of artificial treatment
Estimated Value
$5 - $20 USD as a geological curiosity/specimen
Certification Estimate
Not eligible for diamond grading (Geological specimen only)
Investment Potential
Low (Common mineral specimen)
Similar Diamonds
None; this is a common mineral aggregate rather than a diamond
Setting Suggestions
Not suitable for traditional faceted settings; best left as a cabinet specimen
Care & Maintenance
Keep dry and handle gently to prevent crumbling of the host matrix
Interesting Facts
Geodes often contain quartz or calcite which can mimic the appearance of rough diamonds to the untrained eye