Synthetic/Man-made Material
Faceted Glass (Costume Jewelry)
Amorphous Silicon Dioxide with colorants (Glass)
Hardness: 5-5.5 (Mohs scale); Color: Vibrant turquoise/aqua blue; Luster: Vitreous (glassy); Crystal structure: Amorphous (non-crystalline); Cleavage: Conchoidal fracture; Specific gravity: 2.4-2.8
- Hardness
- 5-5
- Color
- Vibrant turquoise/aqua blue
- Luster
- Vitreous (glassy)
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Physical properties
Hardness: 5-5.5 (Mohs scale); Color: Vibrant turquoise/aqua blue; Luster: Vitreous (glassy); Crystal structure: Amorphous (non-crystalline); Cleavage: Conchoidal fracture; Specific gravity: 2.4-2.8
Formation & geological history
Manufactured through the melting of silica, soda ash, and lime, with specific metallic oxides added to create the aqua-blue hue. This is a contemporary commercially produced jewelry component.
Uses & applications
Used primarily in costume jewelry, fashion accessories, and decorative crafts due to its low cost and ability to mimic semi-precious gemstones.
Geological facts
Glass gemstones have been used since ancient Egyptian times to imitate rare jewels. This specific specimen features an 'Aurora Borealis' or dichroic-style coating to enhance its iridescence and color play.
Field identification & locations
Identify by looking for small air bubbles under magnification, rounded facet edges (glass is softer than most stones), and 'cold to the touch' sensation that warms quickly. These are mass-produced worldwide for the fashion industry.
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