en.wikipedia.org/wiki/Lead_glass

Lead glass, commonly called crystal, is a variety of glass in which lead replaces the calcium ... One alternative material is crystal glass, in which barium oxide, zinc oxide, or potassium .... With the aid of Venetian glassmakers, especially da Costa, and under the auspices of the Worshipful Company of Glass Sellers of London, ...

www.madehow.com/Volume-4/Lead-Crystal.html

Lead crystal produces a product with a ringing sound (without the tin quality of ordinary glass) ... however a government tax on glass began to hurt the business. ... The raw materials for glass making are a chemical "cocktail" of silica-sand ( also ...

homeguides.sfgate.com/identify-crystal-glassware-bowls-102303.html

Most people define crystal as fancy glassware -- but even though glass and crystal ... similar, they are not interchangeable because they contain different materials. ... typically mark the bottoms of bowls with their signature or company name.

www.engraversjournal.com/article.php/2503/index.html

If you are just starting out in the glass and crystal business or thinking about getting into it, ... Glass is the least expensive and least clear of the three materials .

patch.com/pennsylvania/doylestown/how-to-tell-crystal-from-glass

Jul 18, 2013 ... Most people do not think that their everyday juice glass is a piece of crystal. Most of the time your everyday juice glass is made of a material ...

winefolly.com/tutorial/crystal-vs-glass-when-it-comes-to-wine-glasses

Sep 2, 2015 ... The key feature of crystal wine glasses is that the minerals strengthen the material, making it possible to produce durable but thin wine glasses.

learn.winecoolerdirect.com/glass-vs-crystal-wine-glasses

Apr 15, 2016 ... Here are the differences between glass and crystal stemware. ... Now, it's time to talk about the different materials that wine glasses are ...

pubs.acs.org/doi/abs/10.1021/acs.est.6b02971

Oct 10, 2016 ... Silicate glasses containing lead, also called lead crystal glasses, are ... Overview of chemical safety aspects for commonly used materials.

wtamu.edu/~cbaird/sq/2013/03/15/what-kind-of-crystal-are-crystal-drinking-glasses-made-out-of

Mar 15, 2013 ... The naming of certain types of glass as "crystal" is a confusing and inaccurate historical tradition. A crystal is any material that has its molecules ...