A synthetic sapphire still has all the same chemical composition, physical properties, and optical properties as an earth grown sapphire. A lot of people think synthetic means fake, but it simply means that they are lab made. Lab created diamonds are the synthetic version of a mined diamond. Very Good will save you money, and most people can't tell the difference, so that's a great alternative option for those trying to make the most of their budget. For round diamonds, I recommend choosing a cut grade of Excellent/Ideal. If your diamond has low cut quality, it will cause lab or natural diamonds to look dull. When deciding which lab grown diamond you want for your engagement ring, you'll want to pay attention to its cut. A lab diamond and natural diamond give off a balance of white light and rainbow light. A cz exhibits flashes of mostly rainbow light. Cubic zirconia has a much lower refractive index than diamond. Though people compare lab diamonds to other simulated diamonds like cubic zirconia and white topaz, it is the only one that has the same sparkle as a natural diamond engagement ring. They are subjected to the same quality factors such as color grades and clarity. Lab grown diamonds share the same sparkle and light performance as mined diamonds. Diamonds and cubic zirconia have very different refractive indexes, whereas white zircon and lab diamonds have a similar sparkle. Lab grown diamonds and white zircon have more in common regarding light performance than lab diamonds vs cubic zirconia stones. Sri Lanka and Myanmar are also notable for their production of zircon. Zircon gemstones can be unearth in different countries in the world, with the most notable being Thailand.
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