18K 3.23 CTW PARAIBA TOURMALINE & DIAMOND RING: 18K white gold ring contains one oval mixed cut paraiba tourmaline. Weight: 1.55 Ct. Approx. Rated SI in clarity, BG/GB in Hue, 3 in Tone and 3 in Saturation. 72 round brilliant cut diamonds. Weight: 1.68 Ct. Approx. Rated SI2 in clarity and G-H in color. Size 6.5. Weight: 7.5 grams. Est. $3000/6000**