Blue Green Opal w diamond Flat Back Stud unique engagement rings 59ct bright blue with green

59ct bright blue with green Australian black opal is set in a delicate hand carved 14k white gold band with four natural white FG VS diamonds

21ct Australian Crystal opals are set in a hand carved 14k yellow gold seashell inspired setting with pink and purple sapphires and emeralds

Australian opal forms over hundreds of millions of years when silica and other minerals dissolve in water and slowly solidify

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Blue Green Opal w diamond Flat Back Stud unique engagement rings 59ct bright blue with greenThis vibrant blue green opal from Lightning Ridge opal is set in a hand carved 14k yellow gold basket and sparkly white diamond accent. 5mm ear post . 40ct opal