Glass
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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
Links may earn a commission at no extra cost to you.
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
유리(글래스)는 비정질 고체 물질로, 천연산(흑요석, 텍타이트 등)과 인공산 모두 보석 소재로 사용됩니다. 천연 유리는 화산 활동이나 운석 충돌로 형성되며, 리비아 사막 유리나 몰다바이트 등이 보석으로 인기를 끕니다. 인공 유리는 저렴한 보석 대용품으로 광범위하게 사용되며, 내부 기포와 선명한 구형 형태로 천연 보석과 구별할 수 있습니다.
Jewelry Use
Durability
3/10
Science FYI Family
Frequently Asked Questions
What is Glass?
유리(글래스)는 비정질 고체 물질로, 천연산(흑요석, 텍타이트 등)과 인공산 모두 보석 소재로 사용됩니다. 천연 유리는 화산 활동이나 운석 충돌로 형성되며, 리비아 사막 유리나 몰다바이트 등이 보석으로 인기를 끕니다. 인공 유리는 저렴한 보석 대용품으로 광범위하게 사용되며, 내부 기포와 선명한 구형 형태로 천연 보석과 구별할 수 있습니다.
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.
What color is Glass?
Glass is primarily Various.
How much does Glass cost?
Glass falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Glass?
Glass belongs to the Amorphous crystal system.