Non-diamond mineral (Lapis Lazuli)
Non-diamond mineral (Lapis Lazuli) · Rough/Tumbled finish
Poor (Tumbled/Asymmetrical) Cut
Carat
8-12 carats (estimated based on size relative to carpet fibers)
Color
Opaque deep ultramarine blue (Fancy Color Equivalent - N/A)
Clarity
Opaque (N/A for diamond grading)
Shape
Rough/Tumbled finish
Overall Assessment
The specimen in the image is not a diamond. It is a tumbled piece of Lapis Lazuli, identified by its characteristic opaque blue color and visible white calcite inclusions.
Cut Quality
Poor (Tumbled/Asymmetrical)
Brilliance
None (Sub-vitreous to waxy luster)
Fire
None
Scintillation
None
Proportions
Irregular/Unfaceted
Symmetry
Poor
Polish
Medium to Good (Waxy luster)
Fluorescence
None
Inclusions
Calcite (white streaks) and Pyrite (gold-colored flecks) inclusions
Blemishes
Surface pits and minor abrasions consistent with soft minerals
Origin
Likely Afghanistan (typical for Lapis Lazuli with these characteristics)
Treatment Detection
Possible dye treatment (common in Lapis); needs solvent test
Estimated Value
$5 - $15 USD
Certification Estimate
N/A for diamonds; GIA Colored Stone Identification Report
Investment Potential
None; common semi-precious ornamental stone
Similar Diamonds
Sodalite, Azurite, or dyed Jasper (simulants to Lapis, not diamonds)
Setting Suggestions
Wire wrapping, bezel set pendant, or decorative accent stone
Care & Maintenance
Avoid acids, ultrasonic cleaners, and high heat; clean with mild soapy water only
Interesting Facts
This specimen is Lapis Lazuli, a metamorphic rock, not a diamond. It was used historically to create ultramarine pigment for master painters.