Mindat Logo


This page is currently not sponsored. Click here to sponsor this page.

System:AmorphousHardness:5 - 6½
Name:From the Celtic word glas (bluish-green)

An amorphous, homogeneous material with a random liquid-like structure generally formed due to rapid cooling.
Glasses can be natural (such as obsidian) or artificial (e.g., in slags). Artificial glasses are predominantly composed of silica with a few impurities.

Crystals in igneous rocks may contain tiny inclusions of frozen melt, i.e., glass.

In gemmology, man-made glasses have been used as gems since the discovery of glass, and special glass varieties, such as lead glass, containing additives have been used to simulate more valuable gemstones, such as diamond.

Visit gemdat.org for gemological information about Glass. Currently in public beta-test.

Classification of Glass

mindat.org URL:http://www.mindat.org/min-26411.html
Please feel free to link to this page.

Physical Properties of Glass

Diaphaneity (Transparency):Transparent, Translucent, Opaque
Hardness (Mohs):5 - 6½
Hardness Data:Measured

Crystallography of Glass

Crystal System:Amorphous

Optical Data of Glass


Other Names for Glass

Crystal Glass
Other Languages:
Simplified Chinese:玻璃
AndaraCommon GlassLead GlassMt St Helens Stone

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Glass

Search Engines:
  • Look for Glass on Google
  • Look for Glass images on Google
  • Mineral Dealers:
  • Buy from David K Joyce minerals
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Glass specimens for sale - minfind.com
  • Buy from Dave Bunk Minerals
  • Fine minerals from bisbeeborn.com
  • Fabre Minerals - search for Glass specimens
  • Fine and rare minerals from mintreasure.com
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Buy RARE Minerals from Rocks of Africa
  • Buy minerals from YourMineralCollection
  • Buy fine minerals and gemstones from Pala International
  • rare and unusual minerals mainly crystallized
  • Specimens:The following Glass specimens are currently listed for sale on minfind.com.

    Localities for Glass

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    矿物 and/or 产地  
    版权所有© Jolyon Ralph 和周兰怡 1993年至2014年 网站地图 产地,矿物及照片的数据是有獨立各別的版权。欲求更多信息,请联系本站长 网站托管和开发 Jolyon Ralph。 Mindat.org是一个致力于免费提供所有有関於矿物学上所有信息資源的网站。 Mindat資訊是依靠全球成千過萬的成员和支持者的贡献。 Mindat不設提供矿物、岩石等物品出售。 如果阁下想參与提供添加有関矿物資訊或提高本数据库质量,請点击这里进行注册。.
    Current server date and time: 2014.11.21 08:06:28
    Mineral and Locality Search
    and/or Locality:
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds