Cubic Zirconia Tennis Bracelet

 

Cubic zirconia is a synthetic gemstone. It is famous because it  resembles diamonds. Because it looks like diamonds but is significantly cheaper,  cubic zirconia is a highly popular gemstone.  You’ll see it used often in items such as  tennis bracelets.

Cubic zirconia has a natural counterpart called zirconium oxide which was first discovered in 1892. Zirconium oxide is not found in enough abundance in nature to be sold profitably.

Scientists experimented with the natural zirconium oxide and created cubic zirconia crystals by combining zirconium oxide and yttrium oxide.

Cubic Zirconia resembles  diamond so closely that it’s very difficult to distinguish between the two. There are a few key features of CZ which distinguish it from diamond, some observable only under a microscope or a loupe. For example, here are some differences between CZ and Diamond:

  • Hardness.  CZ is not as hard as diamond. Diamond has a  rating of  10 on the Moh's Hardness Scale  whereas CZ has a rating of 8.5 to 9.0.

  • Flaws.  Because  cubic zirconia is synthetic, CZ is virtually flawless, Diamonds, on the other hand, usually have some sort of defect.

  •  Color.  CZ can be made completely  colorless. By comparison, only the rarest of diamonds are truly colorless, most having a tinge of yellow or brown to some extent.

  • Thermal conductivity. CZs are thermal insulators whilst diamonds are among the most efficient thermal conductors, exceeding copper. People with the right instruments can thus easily tell the difference between diamond and CZ.

In addition, cubic zirconia has greater dispersive power, a higher specifc gravity, and a lower refractive index.