- Eugenie Octogone Blue Topaze and Vintage Diamond Leaf Design Ring in 10K White Gold for Women$575.00Total diamond weight .04ct10K White Gold Diamond Halo Oval Amethyst Birthstone Ring For Women$349.00Total diamond weight .03ctConcorde Bright Pear-Shape Blue Topaz Duo and Diamond Ring in 10k Rose Gold For Women$550.00Total diamond weight .06ct