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2. Cristallo - Wikipedia

   en.wikipedia.org/wiki/Cristallo

   Cristallo is a glass that is totally clear (like rock crystal), without the slight yellow or greenish color originating from iron oxide impurities. This effect is achieved through small additions of manganese oxide. [1] Cristallo often has a low lime content, which makes it prone to glass corrosion (otherwise known as glass disease).

3. Depression glass - Wikipedia

   en.wikipedia.org/wiki/Depression_glass

   Depression ware Pink sunflower patterned depression cake plate Green patterned Depression glass pieces. Depression glass is glassware made in the period 1929–1939, often clear or colored translucent machine-made glassware that was distributed free, or at low cost, in the United States and Canada around the time of the Great Depression.

4. Quartz - Wikipedia

   en.wikipedia.org/wiki/Quartz

   Quartz crystal demonstrating transparency. Pure quartz, traditionally called rock crystal or clear quartz, is colorless and transparent or translucent and has often been used for hardstone carvings, such as the Lothair Crystal. Common colored varieties include citrine, rose quartz, amethyst, smoky quartz, milky quartz, and others. [33]

5. Lead glass - Wikipedia

   en.wikipedia.org/wiki/Lead_glass

   Cut glass wine glass made of lead glass. Lead glass, commonly called crystal, is a variety of glass in which lead replaces the calcium content of a typical potash glass. [1] Lead glass contains typically 18–40% (by mass) lead(II) oxide (PbO), while modern lead crystal, historically also known as flint glass due to the original silica source, contains a minimum of 24% PbO. [2]

6. Aluminium oxynitride - Wikipedia

   en.wikipedia.org/wiki/Aluminium_oxynitride

   Aluminium oxynitride (marketed under the name ALON by Surmet Corporation [3]) is a transparent ceramic composed of aluminium, oxygen and nitrogen.Aluminium oxynitride is optically transparent (≥80% for 2 mm thickness) in the near-ultraviolet, visible, and mid-wave-infrared regions of the electromagnetic spectrum.

7. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!