Vintage Art Deco 18K White Gold Opal & Diamond Ring. The ring is in excellent estate condition and ready to wear. It is hallmarked 750. The opal measures 9.18mm x 7.49mm x 2.52mm. It is surrounded by a halo of approximately 1.2 carats of diamonds. There are 8 round cut diamonds at about .10 carats each (.80 CTW) with H/I color Si1 - I1 clarity. There are also 8 baguettes that come to about .40 ctw with H/I color and Vs2 - Si1 clarity. The ring is a size 6.75, the ring face measures 15.75mm x 14.75mm and stands about 8mm high off of the finger. The ring weighs 3.6 grams