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  2. 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]

  3. Glass - Wikipedia

    en.wikipedia.org/wiki/Glass

    Glass is an essential component of tableware and is typically used for water, beer and wine drinking glasses. [51] Wine glasses are typically stemware, i.e. goblets formed from a bowl, stem, and foot. Crystal or Lead crystal glass may be cut and polished to produce decorative drinking glasses with gleaming facets.

  4. Crystal - Wikipedia

    en.wikipedia.org/wiki/Crystal

    A crystal or crystalline solid is a solid material ... (an amorphous glass) and quartz (a crystal). Likewise, if a substance can form crystals, it can also form ...

  5. List of physical properties of glass - Wikipedia

    en.wikipedia.org/wiki/List_of_physical...

    Soda–lime glass (for containers) [2] Borosilicate (low expansion, similar to Pyrex, Duran) Glass wool (for thermal insulation) Special optical glass (similar to Lead crystal) Fused silica Germania glass Germanium selenide glass Chemical composition, wt% 74 SiO 2, 13 Na 2 O, 10.5 CaO, 1.3 Al 2 O 3, 0.3 K 2 O, 0.2 SO 3, 0.2 MgO, 0.01 TiO 2, 0. ...

  6. Fulgurite - Wikipedia

    en.wikipedia.org/wiki/Fulgurite

    Fulgurites are formed when lightning strikes the ground, fusing and vitrifying mineral grains. [7] The primary SiO 2 phase in common tube fulgurites is lechatelierite, an amorphous silica glass. Many fulgurites show some evidence of crystallization: in addition to glasses, many are partially protocrystalline or microcrystalline.

  7. Glass-ceramic - Wikipedia

    en.wikipedia.org/wiki/Glass-ceramic

    After crystallization the dominant crystal phase in this type of glass-ceramic is a high-quartz solid solution (HQ s.s.). If the glass-ceramic is subjected to a more intense heat treatment, this HQ s.s. transforms into a keatite-solid solution (K s.s., sometimes wrongly named as beta-spodumene). This transition is non-reversible and ...

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