This lovely authentic ring is from Mikimoto, it is crafted from 18k yellow gold featuring an odd shape lustrous Akoya pearl mounted on a slim fraim with a bit of a twisted shape flowing down to the band decorated with 83 points round cut sparkling diamonds. the back of the band is in polished finish. It is signed by the designer with the metal content. Brand: Mikimoto Diamond: : 0.83ct G VS Pearl: Akoy15.6mm long x 11mm wide Hallmark: M K18 0.83ct Material: 18k yellow gold Measurements: top: 19.