- Eugenie 10K Yellow Gold Vintage Design Octogon Blue Sapphire and Diamond RingUS$ 488.00Total diamond weight .04ctPrimerose Nature Inspired Blue Sapphire and Diamond Ring in 14K Yellow GoldUS$ 469.00Total diamond weight .05ctPrimerose Nature Inspired Ruby and Diamond Ring in 14K Yellow GoldUS$ 544.00Total diamond weight .05ct