The gemstone pictured is not a diamond. It is a Chrysoberyl Cat's Eye or a simulated chatoyant gemstone (like glass fiber optic).
The gemstone pictured is not a diamond. It is a Chrysoberyl Cat's Eye or a simulated chatoyant gemstone (like glass fiber optic). · Oval Cabochon
Very Good (based on the centration and sharpness of the light band). Cut
Carat
Approximately 3.00 to 4.50 carats based on dimensions relative to the finger.
Color
Translucent Pale Greenish-Yellow (typical of Chrysoberyl).
Clarity
Translucent with strong chatoyancy (cat's eye effect). Not graded on diamond clarity scales.
Shape
Oval Cabochon
Overall Assessment
A beautiful example of a chatoyant cabochon gemstone. While not a diamond, it displays the classic 'eye' effect highly prized in the colored gemstone market.
Cut Quality
Very Good (based on the centration and sharpness of the light band).
Brilliance
Low (cabochons prioritize surface reflection and internal phenomena over brilliance).
Fire
None; dispersion is not a characteristic of this gemstone cut.
Scintillation
Low; replaced by the movement of the cat's eye band as the light source moves.
Proportions
High-domed cabochon to maximize the chatoyant light effect.
Symmetry
Good; the oval appears well-proportioned for a cabochon cut.
Polish
Excellent; the surface shows a high, smooth luster with crisp reflections.
Fluorescence
None typically visible in this gemstone type under standard lighting.
Inclusions
Parallel fine needle-like inclusions (rutile or hollow tubes) which create the chatoyancy.
Blemishes
None visible on the crown; minor surface wear possible given the setting.
Origin
Likely Sri Lanka (formerly Ceylon) or Brazil if natural.
Treatment Detection
None visible; though some cat's eye effects are simulated in glass (fiber optics).
Estimated Value
$200 - $1,500 depending on if it is natural chrysoberyl or a synthetic stimulant.
Certification Estimate
GIA or GRS (for colored stones); would be identified as Chatoyant Chrysoberyl if natural.
Investment Potential
Moderate to high for high-quality natural Chrysoberyl; low for synthetic stimulants.
Similar Diamonds
Not applicable as it is not a diamond; closest visual would be a Cat's Eye Moonstone.
Setting Suggestions
Current yellow gold bezel setting is ideal for protecting the stone edges.
Care & Maintenance
Clean with warm soapy water and a soft brush. Avoid harsh chemicals and ultrasonic cleaners.
Interesting Facts
The 'cat's eye' effect is called chatoyancy, derived from the French 'oeil de chat'.