Graff diamond engagement ring with box and certificate #engagementring #diamonds #luxury This is a 1.0-carat round brilliant cut moissanite solitaire ring accompanied by a GRA (Global Gemological Research Academy) grading report and warranty card. While GRA certificates are common for mass-produced moissanite, they confirm the stone's specifications as D color and VVS1 clarity, which are high-grade for lab-grown stimulants.