Not a diamond; this is a vintage brooch featuring purple glass or amethyst gemstones set in brass or base metal.
Not a diamond; this is a vintage brooch featuring purple glass or amethyst gemstones set in brass or base metal. · Emerald cut (rectangular) for the central stone and round for the accent stones.
Not applicable. Cut
Carat
Not applicable for non-diamond simulants or colored gemstones.
Color
Fancy purple color grade does not apply in standard GIA D-Z white diamond scales.
Clarity
Not applicable to this vintage piece.
Shape
Emerald cut (rectangular) for the central stone and round for the accent stones.
Overall Assessment
A charming and decorative vintage brooch featuring a central purple step-cut stone and smaller round accents, representing classic mid-century costume jewelry rather than a diamond.
Cut Quality
Not applicable.
Brilliance
Moderate vitreous luster typical of glass or quartz.
Fire
Low dispersion, typical of colored quartz or glass simulants.
Scintillation
Displays standard flash-effect scintillation from step-cut facets.
Proportions
Traditional step-cut proportions with standard table and pavilion depth for emerald cut.
Symmetry
Good symmetrical alignment typical of vintage costume jewelry.
Polish
Fair polish consistent with period-specific manufacturing.
Fluorescence
Not evaluated for colored stones/glass.
Inclusions
Minor internal gas bubbles or minor natural mineral inclusions characteristic of amethyst/glass.
Blemishes
Minor surface wear and abrasions consistent with antique or vintage jewelry age.
Origin
Likely mid-20th-century costume jewelry of European or American manufacture.
Treatment Detection
No advanced gemological treatment testing performed; standard heat or dye treatments possible if natural amethyst.
Estimated Value
Low to moderate antique/costume jewelry market value (approx. $20 - $100 USD depending on exact metal content).
Certification Estimate
Not typically certified by major diamond grading labs like GIA; appraised by general antique jewelry evaluators.
Investment Potential
Low investment potential; valued primarily for decorative and nostalgic antique appeal rather than precious stone resale value.
Similar Diamonds
None, as this is vintage costume jewelry containing colored stones/glass rather than diamonds.
Setting Suggestions
Currently mounted in an intricate filigree vintage brooch setting made of brass or gold-tone base metal.
Care & Maintenance
Avoid harsh chemical dips, ultrasonic cleaners, and excessive moisture to preserve the antique metal finish and secure stone settings.
Interesting Facts
Brooches with purple stones were very popular during the Victorian and Retro eras as statement costume accessories.