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2. Cubic zirconia - Wikipedia

   en.wikipedia.org/wiki/Cubic_zirconia

   Cut: Cubic zirconia gemstones can be cut differently than diamonds: The facet edges can be rounded or "smooth". Color: only the rarest of diamonds are truly colorless, most having a tinge of yellow or brown to some extent. A cubic zirconia is often entirely colorless: equivalent to a perfect "D" on diamond's color grading scale. That said ...

3. Diamonique - Wikipedia

   en.wikipedia.org/wiki/Diamonique

   Logo used since 2010. Diamonique is the brand name used by television shopping network QVC for their cubic zirconia simulated colorless diamond, simulated colored diamond, and simulated colored gemstone jewelry (cubic zirconia is a common type of gemstone substitute). [1]

4. 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.

5. Zirconium - Wikipedia

   en.wikipedia.org/wiki/Zirconium

   Zircon (ZrSiO 4) and cubic zirconia (ZrO 2) are cut into gemstones for use in jewelry. Zirconium dioxide is a component in some abrasives , such as grinding wheels and sandpaper . [ 49 ] Zircon is also used in dating of rocks from about the time of the Earth's formation through the measurement of its inherent radioisotopes , most often uranium ...

6. Diamond - Wikipedia

   en.wikipedia.org/wiki/Diamond

   The extreme hardness and high value of diamond means that gems are typically polished slowly, using painstaking traditional techniques and greater attention to detail than is the case with most other gemstones; [30] these tend to result in extremely flat, highly polished facets with exceptionally sharp facet edges. Diamonds also possess an ...

7. Zircon - Wikipedia

   en.wikipedia.org/wiki/Zircon

   A pale blue zircon gemstone weighing 3.36 carats This bracelet has zircon gemstones. The metal is zinc alloy base with silver coating. The metal is zinc alloy base with silver coating. Transparent zircon is a well-known form of semi-precious gemstone , favored for its high specific gravity (between 4.2 and 4.86) and adamantine luster .