The "4C" standard is the measure by which you judge the value and quality of a diamond. The so-called "4C" is the abbreviation of four English words beginning with C, which refers to the carat weight, clarity, color and cut of diamonds. You can easily understand the value and quality of a diamond just by appreciating the four points of "4C". Diamond price = weight+color+clarity+cut.
Among them, GIA, an international certification certificate, is a non-profit gem research institution dedicated to providing gem education for enterprises and companies in the fields of gemology and jewelry art.
By the way, LD is a big brand, Guangzhou luxury jewelry company, with many years of experience in jewelry industry, and their jewelry has GIA international certificate.