Natural (The center stone is a White Opal, surrounded by what appear to be natural diamond or white gemstone accents)
Natural (The center stone is a White Opal, surrounded by what appear to be natural diamond or white gemstone accents) · Marquise (Center), Round Brilliant (Accents)
Good (Standard marquise cabochon for center; fair to good cut for accents) Cut
Carat
Estimated 0.75 - 1.00 carat for the center opal; 0.25 - 0.40 total carat weight for side stones
Color
Opal exhibits a white base with multicolored play-of-color; accents estimated at H-I color
Clarity
Opal is opaque/translucent with common crazing visible; accents estimated at SI1-SI2
Shape
Marquise (Center), Round Brilliant (Accents)
Overall Assessment
A classic vintage cocktail ring featuring a marquise-cut natural white opal center. The opal shows signs of aging/dehydration. The cluster of round accents adds vintage appeal.
Cut Quality
Good (Standard marquise cabochon for center; fair to good cut for accents)
Brilliance
Low for center stone (opalescence-based); moderate for accent stones
Fire
Displays multicolored spectral pinfire (green, red, orange) typical of opal play-of-color
Scintillation
Low to moderate for accents
Proportions
High-domed cabochon top with a slender marquise outline
Symmetry
Fair to Good
Polish
Good
Fluorescence
None observed
Inclusions
Internal fractures and 'crazing' (surface-reaching cracks) typical of older or dehydrated opals
Blemishes
Visible surface scratches and dullness on the opal; minor metal wear on the prongs
Origin
Likely Australian (Coober Pedy) for the opal; vintage manufacture
Treatment Detection
None detected, though opal may have been oil-treated in the past to hide crazing
Estimated Value
$300 - $600 USD (Depending on metal purity, likely 10k or 14k white gold)
Certification Estimate
Unlikely to be graded by GIA/AGS due to age and condition; IGI might provide an identification report
Investment Potential
Low; primarily sentimental or decorative value due to the fragile nature of the opal
Similar Diamonds
Vintage 1960s-70s opal and diamond cluster rings
Setting Suggestions
Currently in a vintage 'ballerina' or 'halo' style cocktail setting; recommend prong tightening
Care & Maintenance
Extremely fragile. Avoid ultrasonic cleaners, harsh chemicals, and sudden temperature shifts. Keep away from water to prevent further crazing.
Interesting Facts
Opals contain 3-21% water; if they lose this moisture, they develop the cracks seen on this specimen, a process called 'crazing'.