Alike cubic zirconia, synthetic stones are also being widely used in Jewellery designs to create twinkling. There are very few substances on earth harder than Synthetic Corundom and Synthetic Spinel. Although they have a Mohs hardness rating of 9, come very close to matching diamond hardness of 10, these Lab-growing minerals not only retain the sparkling of the originals, they are also very affordable. By carefully chosen the most reliable source of raw material, Hsin Yi offers the finest synthetic stones in a variety of colours including Ruby, Sapphire, Pink Tourmaline and Aqurmarine.