Not a diamond; appears to be a multi-colored quartz or ametrine/coated gemstone
Not a diamond; appears to be a multi-colored quartz or ametrine/coated gemstone · Oval mixed cut
Good Cut
Carat
Estimated 3.00 - 4.00 carats based on visual proportions
Color
Fancy Bicolored (Purple and Yellow zones)
Clarity
Eye-clean to slightly included (SI1)
Shape
Oval mixed cut
Overall Assessment
This specimen is a vibrant, multi-colored gemstone (likely quartz/ametrine rather than a diamond) featuring distinct purple and yellow zones, offering a unique decorative appeal for jewelry design.
Cut Quality
Good
Brilliance
Moderate, limited by coloration and pavilion depth
Fire
Low dispersion typical of quartz compared to diamond
Scintillation
Balanced flash and sparkle across the bi-color zones
Proportions
Standard oval mixed cut proportions with a moderate depth
Symmetry
Fair to Good, typical for commercial colored stones
Polish
Good
Fluorescence
Cannot be determined without UV testing
Inclusions
Minor natural crystalline inclusions typical of quartz
Blemishes
Possible minor surface abrasions on facet junctions
Origin
Likely natural quartz (potentially ametrine from Bolivia or synthetic/treated quartz)
Treatment Detection
Potential surface coating or heat/irradiation treatment to enhance bi-color effect
Estimated Value
$50 - $150 USD (as a colored gemstone, not a diamond)
Certification Estimate
GIA or local gemological lab for species identification
Investment Potential
Low; primarily a decorative semi-precious gemstone rather than an investment asset
Similar Diamonds
None, as this is not a diamond; comparable to ametrine or colored quartz varieties
Setting Suggestions
Custom bezel or prong setting in yellow or white gold to highlight the dual colors
Care & Maintenance
Avoid harsh chemicals, ultrasonic cleaners, and sudden temperature changes; store separately from diamonds to prevent scratching
Interesting Facts
Bi-colored quartz combining amethyst and citrine zones is naturally occurring and known as ametrine, though multi-colored synthetic quartz is also common in the market