Not a diamond (Identified as Labradorite, a feldspar mineral displaying labradorescence)
Not a diamond (Identified as Labradorite, a feldspar mineral displaying labradorescence) · Cushion / Irregular Tumbled Cabochon
Fair (Tumbled and polished cabochon, not faceted) Cut
Carat
Estimated around 15 to 25 carats equivalent by volume (gemstone weight)
Color
Gray-brown body color with multicolored iridescent sheen (Labradorescence)
Clarity
Opaque with visible internal cleavage planes and inclusions (Not applicable on diamond scale)
Shape
Cushion / Irregular Tumbled Cabochon
Overall Assessment
The specimen in the image is not a diamond, but rather a piece of labradorite feldspar exhibiting characteristic iridescent schiller effect.
Cut Quality
Fair (Tumbled and polished cabochon, not faceted)
Brilliance
Low (Displays optical sheen rather than diamond brilliance)
Fire
Strong interference colors (labradorescence) rather than dispersion fire
Scintillation
Flashes of blue, green, and gold light upon movement
Proportions
Thick depth cabochon, no standard diamond crown or pavilion
Symmetry
Fair/Asymmetrical due to natural tumbled form
Polish
Good (Smooth surface polish with minor surface imperfections)
Fluorescence
Strong multicolored sheen effect under direct lighting
Inclusions
Heavy internal twinning planes, fractures, and dark mineral inclusions
Blemishes
Surface scratches, pitting, and natural fractures along cleavage lines
Origin
Madagascar, Canada, or Finland (common sources for high-flash Labradorite)
Treatment Detection
None detected; entirely natural mineral specimen
Estimated Value
Low commercial value ($10 - $50 USD depending on specimen grade)
Certification Estimate
Gemological identification by GIA or similar lab as Feldspar (Labradorite)
Investment Potential
Low; valued as a mineral specimen or semi-precious ornamental stone
Similar Diamonds
None (Labradorite is a feldspar mineral, not a diamond or diamond simulants like moissanite)
Setting Suggestions
Wire-wrapped in sterling silver or bezel-set in artisan jewelry
Care & Maintenance
Avoid harsh chemicals, ultrasonic cleaners, and hard impacts due to perfect cleavage
Interesting Facts
Labradorite is famous for its optical phenomenon called labradorescence, caused by light diffraction in lamellar intergrowths