It will be challenging for even a trained eye to spot the difference in one go. In order to avoid this, make sure that the diamond ring that you purchase comes with an authenticity certificate by GIA or AGS. However, it is not necessary that the diamond ring that you got as a gift or as an heirloom has an authenticity certificate. Luckily, there are some easy at-home tests, with which you can spot an artificial diamond ring. One of the basic tests is to thoroughly check the metal settings and mountings of your ring. A real diamond will be usually secured by employing high-quality settings such as halo, pave, side stones, etc. Similarly, the metal choices will be often platinum, yellow gold, and white gold. In order to ensure the quality of the metal band, you can check its inner side for markings such as plat, 22k, etc. Note that if the gemstones have engraving like CZ, it is not a real diamond because CZ indicates Cubic Zirconia. Apart from this, some of the common tests you can consider to find a fake diamond include fog test, UV light test, heat test, water test, newspaper test, shine test, etc.