Beautiful natural diamonds and sapphire necklace and earrings set

from very reputable jewelry store and i have a authentic receipt that can be matched with my name and the item. beautiful 18 inch white gold rhodium over solid sterling silver diamond and black sapphire necklace and earrings set. gemstone diamond. clarity 13. color I near colorless. cut round cut. height 1.2mm. width 1.2mm. depth 0.8. ctw0.03ctw. gemstone sapphire. gem grade AAA. cut oval cut. height 8mm. depth 2.1mm. ctw1.5ctw. color black. gemstone sapphire. gem grade AAA. cut oval cut. height 6mm. width 4mm. depth 1.1mm. ctw1.2ctw. color black. primary material sterling silver. plating material white gold rhodium. overall weight. 9.4 g natural and unenhanced