0.3 carat is 30 cents. A diamond with 30 cents is small if it is a loose diamond, but it won't look small if it is set in a ring. There are many diamond rings on the Internet now. You can go to those places to buy it, which is much cheaper, like Taobao. Find something bigger to buy,

The identification of diamonds mainly depends on certificates. Merchants with scores over 30 (0.3 carat) can be required to have a GIA diamond certificate. However, the GIA diamond certificate is expensive, because the GIA certificate is an international certificate. If you don't want to add money, you can take it to the quality inspection department for identification. Generally around 50 yuan, basically. If there is anything you don't understand, please ask questions.

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