Semi mount for 5.12ct( 10.76 x 11.68 x 7.20 mm)heart from client

$1288 for this ring semi mount without 5.12ct( 10.76 x 11.68 x 7.20 mm)heart center, with 2 pieces 3*5mm pear lab grown diamond accents and 1/2 eternity lab grown diamond accents in 14K white gold. Size 8.5