Professional links - Diamond Knowledge - SY Diamond
Diamond Knowledge
Basic tips - 4C Other attributes Professional links

Professional links

To let our customers buy with confidence, we offer diamonds with GIA and IGI certificates. The laser certificate number could be clearly viewed on the girdle of the diamonds. GIA and IGI are renowned institute for grading diamonds for with long history, for more information of the two institutes, please refer to below links:


The below video showed how GIA grade a diamond: