Glass / Paste (Imitation)
Glass / Paste (Imitation) · Pear (Teardrop)
Good (Machine-cut or molded facets typical of costume jewelry) Cut
Carat
N/A (Imitation/Glass piece, visual size exceeds standard carat scales for gemstones)
Color
Colorless with slight yellow tone
Clarity
Eye-clean (typical of molded glass/paste stones)
Shape
Pear (Teardrop)
Overall Assessment
The item features three large pear-shaped glass paste stones accompanied by smaller cabochons set in a vintage gold-tone metal brooch with decorative chains, representing classic mid-century costume jewelry craftsmanship rather than genuine diamonds.
Cut Quality
Good (Machine-cut or molded facets typical of costume jewelry)
Brilliance
Moderate, typical of high-index lead glass (paste)
Fire
Exaggerated fire due to high dispersion in lead glass
Scintillation
Broad flashes of light typical of larger, vintage costume stones
Proportions
Standard costume jewelry proportions with large table facets and deep pavilions designed for maximum surface flash rather than optical precision
Symmetry
Good, symmetrical pear arrangement
Polish
Good, glossy glass luster
Fluorescence
None observed
Inclusions
Internal gas bubbles typical of glass paste
Blemishes
Minor surface wear and slight abrasion along facet junctions
Origin
Likely manufactured in Europe (e.g., Austria, Czechoslovakia) or the USA for mid-20th-century costume jewelry
Treatment Detection
Molded imitation glass with foil backing or high lead content typical of vintage paste jewelry
Estimated Value
Low commercial value ($20 - $100 depending on vintage designer marks and overall setting metal)
Certification Estimate
Not applicable for grading by major gemological laboratories like GIA or AGS; evaluated as vintage costume jewelry components
Investment Potential
Collectible value only, typical of vintage costume jewelry rather than gemstone investment
Similar Diamonds
None, as these are vintage glass paste stones imitating diamonds rather than actual carbon-based or lab-grown diamonds
Setting Suggestions
Retain original vintage gold-tone setting with decorative chain drape and cabochon accents; not recommended for resetting into precious fine jewelry
Care & Maintenance
Clean gently with a soft, damp cloth; avoid submerging in water or ultrasonic cleaners to protect foil backings and vintage metal settings
Interesting Facts
Paste stones were heavily popularized in antique and vintage costume jewelry, often crafted to mimic high-end diamond parures worn by royalty and aristocracy