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  2. Cubic zirconia - Wikipedia

    en.wikipedia.org/wiki/Cubic_zirconia

    Cubic zirconia (abbreviated CZ) is the cubic crystalline form of zirconium dioxide (ZrO 2). The synthesized material is hard and usually colorless, but may be made in a variety of different colors. The synthesized material is hard and usually colorless, but may be made in a variety of different colors.

  3. Gemology - Wikipedia

    en.wikipedia.org/wiki/Gemology

    Any single test is nearly always only indicative. For example: The specific gravity of ruby is 4.00, glass is 3.15–4.20, and cubic zirconia is 5.6–5.9 . So one can easily tell the difference between cubic zirconia and the other two; however, there is overlap between ruby and glass. As with all naturally occurring materials, no two gems are ...

  4. 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 ...

  5. Swarovski - Wikipedia

    en.wikipedia.org/wiki/Swarovski

    Swarovski (/ s w ɒ ˈ r ɒ f s k i /, German: [svaˈrɔfski] ⓘ) is an Austrian producer of glass based in Wattens in the Tyrol.It was founded in 1895 by Daniel Swarovski.. The company is split into three major industry areas: the Swarovski Crystal Business, which primarily produces crystal glass, jewelry, rhinestone, watches and accessories; Swarovski Optik, which produces optical ...

  6. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    Examples of simulated or imitation stones include cubic zirconia, composed of zirconium oxide, synthetic moissanite, and uncolored, synthetic corundum or spinels; all of which are diamond simulants. The simulants imitate the look and color of the real stone but possess neither their chemical nor physical characteristics.

  7. Diamond simulant - Wikipedia

    en.wikipedia.org/wiki/Diamond_simulant

    Cubic zirconia can be coated with diamond-like carbon to improve its durability, but will still be detected as CZ by a thermal probe. CZ had virtually no competition until the 1998 introduction of moissanite (SiC; silicon carbide). Moissanite is superior to cubic zirconia in two ways: its hardness (8.5–9.25) and low SG (3.2).

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