Not a diamond; this is a fire opal showing characteristic play-of-color with red and orange hues.
Not a diamond; this is a fire opal showing characteristic play-of-color with red and orange hues. · Irregular / Freeform cabochon or rough specimen
Not applicable (rough or natural matrix surface) Cut
Carat
Estimated 2.50 to 4.00 carats based on rough dimensions
Color
Fancy Intense Red-Orange with multi-color flash
Clarity
Translucent to semi-transparent with characteristic opal inclusions
Shape
Irregular / Freeform cabochon or rough specimen
Overall Assessment
An intriguing and visually striking gemstone specimen, identified as a vibrant fire opal rather than a diamond, showcasing remarkable internal red and orange spectral play-of-color.
Cut Quality
Not applicable (rough or natural matrix surface)
Brilliance
Vibrant vitreous to sub-resinous luster reflecting internal fire
Fire
Exceptional spectral play-of-color (red, orange, yellow flashes)
Scintillation
Dynamic flashfire effect shifting with viewing angle
Proportions
Non-standard organic shape; deep body
Symmetry
Asymmetrical natural form
Polish
Raw or semi-polished internal fracture surface
Fluorescence
Inert to faint greenish under UV
Inclusions
Typical micro-fractures, sand/matrix spots, and characteristic blocky play-of-color patterns
Blemishes
Surface pitting and natural fissures
Origin
Likely Mexico (famous for fire opals) or Ethiopia (Welo opal)
Treatment Detection
No obvious treatments observed; untreated natural opal appearance
Estimated Value
$100 - $400 depending on exact weight, stability, and exact origin
Certification Estimate
GIA Colored Stone Identification Report
Investment Potential
Moderate collector appeal, primarily valued as a decorative or bespoke jewelry gemstone
Similar Diamonds
None, as this is an opal rather than a diamond
Setting Suggestions
Bezel setting in yellow gold or copper-infused metals to complement the warm red tones
Care & Maintenance
Delicate gemstone (Mohs hardness 5.5-6.5); avoid harsh chemicals, ultrasonic cleaners, and extreme temperature changes
Interesting Facts
Fire opals are unique because unlike most opals, they often display bright colors without the classic play-of-color, though this specimen clearly exhibits the coveted block/chessboard flash pattern.