Natural rough diamond or potentially quartz/gem crystal with strong iridescence/coating, assumed diamond-like mineral sample for evaluation
Natural rough diamond or potentially quartz/gem crystal with strong iridescence/coating, assumed diamond-like mineral sample for evaluation · Rough crystal / Irregular uncut crystal form
Not applicable (Rough, unpolished crystal) Cut
Carat
Estimated 1.5 - 2.5 carats based on relative finger size comparison
Color
Colorless to pale with surface interference colors / iridescence
Clarity
Included (I1-I3 equivalent due to internal fractures and cloudiness)
Shape
Rough crystal / Irregular uncut crystal form
Overall Assessment
An interesting raw crystal specimen displaying natural form and surface optical effects, requiring specialized testing to confirm absolute mineral identity and treatment status
Cut Quality
Not applicable (Rough, unpolished crystal)
Brilliance
Low to moderate due to rough surface and lack of standard faceting
Fire
Minimal internal fire visible; surface sheen creates rainbow effects
Scintillation
Poor, lacking standard facet arrangements for patterned light return
Proportions
Natural uncut proportions with variable depth and angles
Symmetry
Natural crystal symmetry, highly irregular
Polish
Unpolished natural crystal faces
Fluorescence
Cannot be definitively determined without UV testing, visual suggests surface sheen
Inclusions
Internal cleavage planes, feathers, and potential mineral inclusions
Blemishes
Natural growth lines, trigons or surface etching, and potential coating
Origin
Alluvial or primary kimberlite deposit origin if natural diamond
Treatment Detection
Possible surface coating or treatment causing the iridescent sheen; requires advanced spectroscopy
Estimated Value
Minimal collector or specimen value, highly dependent on actual mineral composition (approx. $50 - $200 as a mineral specimen)
Certification Estimate
GIA or similar major lab would issue a rough diamond certificate or identification report
Investment Potential
Low investment potential; primarily of interest to mineral collectors rather than investors
Similar Diamonds
Other unpolished octahedral or dodecahedral rough diamond crystals
Setting Suggestions
Raw mineral pendant setting, wire-wrapped mounting, or bezel setting to protect the fragile rough edges
Care & Maintenance
Store separately to prevent scratching other stones; avoid harsh ultrasonic cleaners if coatings are present
Interesting Facts
Rough diamonds showcase the natural geometric crystallization habits of carbon under high pressure and temperature