Laboratory Diamond Jewellery › 4.70Ct Lab Diamond Tennis Necklace - SQ9656148 Image 1 of 2 Image 2 of 2 4.70Ct Lab Diamond Tennis Necklace - SQ9656148 $9,880.00 18KT White Gold Lab Diamond Tennis Necklace set with 181 DEF Colour VS Clarity Lab Diamonds. Total Diamond Weight 4.70Ct. Add To Cart Added! 18KT White Gold Lab Diamond Tennis Necklace set with 181 DEF Colour VS Clarity Lab Diamonds. Total Diamond Weight 4.70Ct.