One 14KT Yellow Gold 15mm Pearl and Diamond Ring. One electronically tested 14KT yellow gold ladies cast & assembled mabâ€š pearl and diamond pendant/enhancer. The featured mabe pearl is set within a gold bezel accented with bead set round diamonds. The pendant/enhancer measures 40.0mm x 24.0mm with bail. Bright polish finish with rhodium accents. Identified with markings of "585". Condition is new, good workmanship. Containing: One mabe pearl, 15.0mm in size to 15.0mm in size. The pearl is white in color with a very good luster, round dome, clean Graded in the setting. Mab, pearls, often referred to as blister pearls, are different from traditional pearls because they are grown and shaped. Mab, pearls have a half-spherical shape caused by positioning the nucleus onto the inside of the oyster's shell rather than the body. Mab, pearls can be grown in Akoya, South Sea, Tahitian and freshwater oysters. The most common type of oyster used to culture mab, pearls is the Pteria penguin oyster. The Pteria penguin oyster accounts for roughly 75 percent of the pearls produced today.. Fifteen bead set single cut diamonds, measuring 0.90 - 0.90 x 0.59mm (depth est.) approximate total weight of 15 Stones = 0.04ct. Graded in the setting. Clarity of I-1 to I-2. Color of F - H. Total Weight of Diamonds 0.04 ct. Total Weight of Pendant/Enhancer 6.61 gm.