Pear-shaped 1.64ct lab diamond as center stone (10.47 x 6.52 x 4.09 mm) Color: D, Clarity : VVS1 The setting is the Brilliant Earth Demi Diamond Ring (1/3 ct. tw.) This setting has a hidden halo, making the center stone appear larger. ($1790 new) The attached band is the Brilliant Earth Luxe Winding Willow Diamond Ring (1/4 ct. tw.) ($1390 new) All metal is 18K white gold. A few photos show the engagement ring before the band was attached.