"Oxide diamond" refers to "artificial cubic zirconia", whose chemical composition is zirconia, which is an imitation of diamond, also known as CZ diamond, commonly known as "zircon" and "sapphire", and is artificially synthesized. When we study diamond inspection, the first lesson is to learn to identify cubic zirconia of diamond paste. Now we can see it with the naked eye, and people who haven't studied it can see it by comparing it with diamonds. Because it is synthetic, the value is not very high, and because the refractive index and dispersion value are close to those of diamonds, it looks like full firepower. But it is not "durable", it will wear out over time and will not flash. But diamonds don't. Diamonds are really "forever". Kaka Jewelry www.kakagem.com Lao Wang's wife's younger brother.