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  2. Cubic zirconia - Wikipedia

    en.wikipedia.org/wiki/Cubic_zirconia

    Cubic zirconia has no cleavage and exhibits a conchoidal fracture. Because of its high hardness, it is generally considered brittle. Under shortwave UV cubic zirconia typically fluoresces a yellow, greenish yellow or "beige". Under longwave UV the effect is greatly diminished, with a whitish glow sometimes being seen.

  3. Fracture toughness - Wikipedia

    en.wikipedia.org/wiki/Fracture_toughness

    Fracture toughness is a quantitative way of expressing a material's resistance to crack propagation and standard values for a given material are generally available. Morphology of fracture surfaces in materials that display ductile crack growth is influenced by changes in specimen thickness.

  4. Zirconium - Wikipedia

    en.wikipedia.org/wiki/Zirconium

    The most common oxide is zirconium dioxide, ZrO 2, also known as zirconia. This clear to white-coloured solid has exceptional fracture toughness (for a ceramic) and chemical resistance, especially in its cubic form. [37] These properties make zirconia useful as a thermal barrier coating, [38] although it is also a common diamond substitute. [37]

  5. Yttria-stabilized zirconia - Wikipedia

    en.wikipedia.org/wiki/Yttria-stabilized_zirconia

    Yttria-stabilized zirconia (YSZ) crystal structure. Yttria-stabilized zirconia (YSZ) is a ceramic in which the cubic crystal structure of zirconium dioxide is made stable at room temperature by an addition of yttrium oxide. These oxides are commonly called "zirconia" (Zr O 2) and "yttria" (Y 2 O 3), hence the name.

  6. Zirconium dioxide - Wikipedia

    en.wikipedia.org/wiki/Zirconium_dioxide

    Visually discerning a good quality cubic zirconia gem from a diamond is difficult, and most jewellers will have a thermal conductivity tester to identify cubic zirconia by its low thermal conductivity (diamond is a very good thermal conductor). This state of zirconia is commonly called cubic zirconia, CZ, or zircon by jewellers, but the last ...

  7. ‘Reflection in a Dead Diamond’ Review: While James Bond ...

    www.aol.com/reflection-dead-diamond-review-while...

    If a picture is worth a thousand words, then every shot in Hélène Cattet and Bruno Forzani’s cine-kaleidoscopic “Reflection in a Dead Diamond” is worth its weight in cubic zirconia. The ...

  8. Zircon - Wikipedia

    en.wikipedia.org/wiki/Zircon

    Zircon (/ ˈ z ɜːr k ɒ n,-k ən /) [7] [8] [9] is a mineral belonging to the group of nesosilicates and is a source of the metal zirconium.Its chemical name is zirconium(IV) silicate, and its corresponding chemical formula is Zr SiO 4.

  9. The best Valentine's Day gifts under $100 - AOL

    www.aol.com/lifestyle/best-valentines-day-gifts...

    Forget chocolate — get your Valentine what they really crave this year: Coffee. This box comes with three love-themed blends: Love Letters, Valentine's Blend, and Aphrodite No.2.

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