12.13 Carat Lightning Ridge Black Opal and Diamond Cocktail Ring set in Platinum

Natural Black Opal 3.77 carats and Diamond Cocktail Ring in Platinum Black Opal and Diamond Ring features a Center Oval Cabochon Black Opal with flashes of Green and Blue play of co...

A breathtaking showcase of nature's finest phenomena, this estate cocktail ring is centered around an exceptional, GIA-certified natural black opal. The ring is meticulously crafted ...

GIA certified Natural Black Opal 6.23 ct and Diamond Cocktail Ring in Platinum Natural certified Black Opal Ring features a center Oval Cabochon Black Opal with flashes of Green, Y...

GIA-certified 8.69 carat oval cabochon black opal with no color treatment and 1.78 carat total weight baguette diamond ballerina halo in platinum 900 cocktail ring. Ring Size 7.25,...

A large and impressive cocktail ring featuring a fine and gemmy Australian black opal! The opal weighs 5.80 carats and has excellent play-of-color and large prominent bright flashes ...

Natural Black Opal 2.53 ct and Diamond Cocktail Ring in Platinum Natural Black Opal Ring features a 2.53 carat Oval Cabochon Black Opal with flashes of Green, Yellow, Orange, Red, a...

A large and impressive natural black opal from Australia! It weighs 6.90 carats and has great play-of-color as flashes of blue and green can be seen across the opal which also has a ...

This beautiful ring features a 4.07 carat oval lightening ridge black opal displaying a phenomenal red, orange, yellow, blue, green play of color. The ring is set in 18 karat white ...

A lovely platinum cocktail ring featuring a 4.51 carat Australian black opal. It is a classic blue-green opal with excellent play of color as bright flashes roll across the surface o...

A large and impressive platinum cocktail ring featuring a natural Australian black opal! The opal weighs 4.60 carats and has great play of color as flashes of greens and blues dance ...