1.We offer high-quality moissanite, and no matter the size, all are colorless to faintly colored (D color grade) with exceptional clarity (VVS1),Excellent Cut 2.We could offer the GRA Certificate 3.Pass the diamond tester 4. Metal parts are made of sterling silver , which are totally friendly to skin, other than stainless steel or alloy which may contain harmful substances. Compared to those use 0.1u-0.2u gold plating, we adopt 0.3u gold plating for 5 times, which ensure the color last for at least 2 years.