Diamond certificate, also known as diamond grading certificate and diamond quality guarantee, is a report based on 4C standard formed by jewelry experts after careful observation and testing of diamonds in a specific environment according to strict grading standards. Among them, it is very important to analyze the characteristics of diamond such as size, clarity, cutting, polishing and symmetry under a magnifying glass, including determining the color grade of diamond and fluorescence detection.
The history of diamonds originated in India. /kloc-before the 0/7th century, although Borneo also produced diamonds in the early days, it can be said that India was the only place that produced diamonds because the output was very small.