Cubic zirconia is the most popular diamond simulant currently available. You can find polishing recommendations for this material in our IGS member survey results. Editor’s Note: Some years ago, the International Gem Society (IGS) conducted a survey of members’ polishing techniques. Here, you’ll find the results for cubic zirconia polishing. Begin with a small, soft brush and a couple of lukewarm (not hot) water with a mild liquid soap. After dipping the brush into the soap and water mixture, gently remove the CZ jewelry with the brush. Use only minimal force in order not to damage your CZ. Although it is an excellent diamond substitute, cubic zirconia has its drawbacks. The best way is using the refractive index. Shine a light on your diamond – if it casts rainbow reflections, you have a cubic zirconia or another synthesised stone. A CZ stone is an affordable alternative to a diamond but it is no replacement for the real thing – its dull shine and its lack of durability means that jewellery containing The best way to make your cubic zirconia sparkle is to rub it with a clean toothbrush. The bristles of a good toothbrush are generally made of nylon and are smooth enough to avoid scratching the zirconia. A soft cloth may also work, but you should avoid using a hard surface like marble or granite to avoid scratching the zirconia. HOW TO DO THIS: - Place your jewelry on an oven-safe glass dish/pan (such as corningware or Anchor Hocking etc.) - After it's in the oven, turn the oven on to 400 degrees. - Let the CZ "bake" at that temp for about an hour. DO NOT OPEN OVEN DOOR. - Turn the oven off, and let the oven cool *without opening the door*. . Gently scratch the surface with your diamond. If there is a visible scratch mark, then it's probably not a real diamond. However, if there is no visible scratch mark, then congratulations! You likely have a real diamond. Does cubic zirconia shine like diamonds? Cubic zirconia is often used as a cheaper alternative to diamonds. Diamonds have a refractive index of 2.417-2.419, while that of cubic zirconia is 2.176. This means that whenever light enters a diamond, it slows down more than it would in cubic zirconia. However, this isn’t noticeable to the eyes. What is more noticeable in these gems is the reflection of white light. Cubic zirconia is often more sparkly and fiery, whereas diamond is more brilliant. Also, cubic zirconia produces much more colored light than diamond. This can make the stone look even more stunning than a comparable diamond, but it also helps to give away its authenticity. This difference is even more obvious in larger stones. Cubic zirconia is classified as a diamond simulant. This gemstone resembles natural diamonds but is composed of different materials. While natural & lab-grown diamonds consist of carbon, cubic zirconia comprises zirconium dioxide (ZrO2). The "cubic" in its name is derived from its cubic crystalline form, similar to diamonds. Colourless cubic zirconia which is used to simulate diamonds normally glows with a greenish yellow colour under UV light. The coloured types of CZ may glow in different colours depending on the element used to produce the tint. Diamonds do have different levels of fluorescence and in a group some can seem to stand out as being very bright.

how to make cubic zirconia shine like a diamond