Glass

Q: What is Glass?

El vidrio natural o artificial ha sido utilizado como material de gemas y ornamental durante milenios. El obsidiano (vidrio volcánico natural) fue tallado por culturas antiguas, mientras que el vidrio de impacto de meteorito como la tectita líbica o la moldavita es muy apreciado por los coleccionist

Q: What is the hardness of Glass?

Glass has a Mohs hardness of 4.0 to 6.0, making it relatively soft for use in jewelry.

Q: How much does Glass cost?

Glass falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.

Q: What is the crystal system of Glass?

Glass belongs to the Amorphous crystal system.

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Physical & Optical Properties

Category Semi-Precious Gems

Mohs Hardness 4,0 – 6,0

Specific Gravity 2,39 – 4,0

Refractive Index 1,48 – 1,7

Crystal System Amorphous

Luster Vitreous

Fracture Conchoidal

Color various

Mohs Hardness

Mohs Hardness: 4,0 – 6,0

1 Soft10 Hard

Crystal System

Value & Market

Price Tier Budget (< $50/ct)

Where to Buy Glass

Blue Nile Fine jewelry retailer

James Allen Gemstone jewelry

Brilliant Earth Ethically sourced gems

Amazon Wide selection

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Treatments

Can be coated with metal foils - Gemmological Tables, Ulrich Henn and Claudio C. Milisenda, 2004, p 2 4 to 6Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references 2.39 to 4.00Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references ConchoidalGemdat.org, Management Team (2012) 1.48 to 1.70Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references IsotropicUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Various, play of colourUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references Yellowish green, Fe2+ in octahedral coordination. Brown Fe3+ in octahedral coordinationW. William Hanneman, Pragmatic Spectroscopy For Gemologists (2011) Transparent,Translucent,OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references VitreousGemdat.org, Management Team (2012) Strong chalky fluorescence commonHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) AmorphousHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references Gas bubbles, swirl marks, partly tabby extinction - Gemmological Tables, Ulrich Henn and Claudio C. Milisenda, 2004, p 2 Glass information at mindat.org

About Glass

El vidrio natural o artificial ha sido utilizado como material de gemas y ornamental durante milenios. El obsidiano (vidrio volcánico natural) fue tallado por culturas antiguas, mientras que el vidrio de impacto de meteorito como la tectita líbica o la moldavita es muy apreciado por los coleccionistas. El vidrio artificial de alta calidad (paste, strass) ha sido históricamente importante en joyería ornamental asequible y como sustituto de gemas. El vidrio de Murano y el cristal de plomo fino siguen siendo apreciados en colecciones artísticas.