Natural Fancy Black Diamond
Natural Fancy Black Diamond · Pear Cut / Modified Shield
Fair Cut
Carat
6.20 Carat (per user notes)
Color
Fancy Black (Opaque)
Clarity
Indeterminate (Opaque) / AAA quality commercial grade for black diamonds
Shape
Pear Cut / Modified Shield
Overall Assessment
This is a significant 6.20-carat specimen demonstrating the characteristic adamantine luster of a natural black diamond. While it lacks internal brilliance, its size and uniform saturation make it a striking choice for bespoke jewelry.
Cut Quality
Fair
Brilliance
Low (Black diamonds absorb light rather than refracting it).
Fire
N/A
Scintillation
Moderate metallic or adamantine luster reflected from surface facets.
Proportions
Non-standard; high crown with a large flat table, significantly thick girdle.
Symmetry
Good
Polish
Very Good (high luster visible on table)
Fluorescence
None
Inclusions
Extensive internal twinning and dark inclusions (typical for carbonados and natural black diamonds) creating near-total opacity.
Blemishes
Minor surface abrasions and pitting visible on the girdle facets.
Origin
Likely Brazil or Central African Republic (common sources for natural Carbonado/Black diamonds).
Treatment Detection
No immediate signs of irradiation; appears to be natural opaque black, though HPHT treatment is possible for uniform color.
Estimated Value
$1,500 - $3,500 USD (Black diamonds of this size vary greatly depending on whether the color is natural or heat-treated).
Certification Estimate
GIA (Colored Diamond Grading Report) - Fancy Black, Natural Color.
Investment Potential
Low to Moderate; black diamonds are valued more for aesthetic uniqueness than traditional diamond appreciation.
Similar Diamonds
Carbonado diamonds or high-grade treated black diamonds of similar weight.
Setting Suggestions
Platinum or White Gold with a halo of colorless diamonds to provide contrast against the dark center stone.
Care & Maintenance
Ultrasonic cleaners are generally safe, but avoid high heat or steam which may expand micro-fractures common in black diamonds.
Interesting Facts
Unlike white diamonds, black diamonds get their color from a high density of dark inclusions like graphite and hematite, which makes them much harder to cut.
Notes
6,20 karat