Rhinestone (Lead Glass)
Simulated Diamond (Lead Crystal / Glass variety) · Simulated Gemstone / Costume Jewelry Component
Crystal System
Amorphous (Non-crystalline) and typically faceted into round or rose cuts
Mineral Group
Amorphous Solid (Artificial Glass)
Chemical Formula
SiO2 + PbO (Silica and Lead Oxide)
Formation Process
Industrial Melting (Cooling silica melt with lead oxide stabilizers to increase refraction)
About This Crystal
Transparent colorless stones with high vitreous luster, showing significant wear and dulling. Faceting appears uneven due to age and abrasion.
Physical Characteristics
Color: Colorless/Clear; Streak: White (powder); Cleavage: None; Fracture: Conchoidal; Specific Gravity: 2.4 - 4.0; Fluorescence: Variable (often inert or chalky under UV).
Optical Properties
Refractive Index: 1.50 - 1.70; Singly Refractive; Dispersion: High (fire); lacks the refractive depth of natural diamond.
Hardness & Durability
Origin Region
Manufactured globally (Historically notable: Austria, Czech Republic)
Hardness & Durability
Mohs Hardness: 5 to 6; Brittle toughness; Susceptible to scratching and chipping from daily wear.
Care & Maintenance
Clean with warm soapy water and a soft brush; avoid ultrasonic cleaners if foil-backed; store separately to prevent scratches.
Rarity & Value
Common; Value derived from historical vintage appeal rather than material scarcity; Low market value.
Special Characteristics
Foil-backing (often used to increase light reflection), visible facet edge wear (abrasion), and industrial mold marks.
Lore & History
Popularized in the 18th century by Georg Friedrich Strass. Symbolizes accessible luxury and vintage costume jewelry history; used for sparkle in theatrical and evening attire.