Akoya Pearl Grading

AKOYA PEARL GRADING

Over the past eight decades, Mastoloni has cultivated a reputation for honesty, integrity and value. Our association with pearl excellence started from the beginning when we committed to maintaining the strictest quality standards of cultured pearl sorting and grading.

WHY MASTOLONI IS THE STANDARD FOR JAPANESE AKOYA PEARL GRADING

A large part of maintaining these high standards is educating Mastoloni's ever-expanding network of authorized retailers about the nuances and workings of the cultured pearl industry. Due to our tireless commitment to pearl excellence, product education and consistency, the Mastoloni name is considered one of the most trusted in the world's jewelry industry.

MASTOLONI'S SORTING AND GRADING STANDARDS

*listed in order of importance

Luster and Orient: the mirror-like reflection and degree of surface brilliance
Nacre (Pearl Skin): the thickness and density of nacre
Color: the varying degree of hue, from silver/white to rose
Shape: the degree of roundness; shapes range from perfectly circular to baroque
Matching: the consistency of color, shape, gradation, etc. of each pearl within the strand
Spotting: the small blemishes on the nacre—though naturally occurring during the pearl's formation, less spotting is more desirable

NECKLACE SIZES, LENGTHS AND STRINGING

Mastoloni offers it's Graded Akoya Necklace Program in the following sizes and lengths:

Sizes: 5.5-6MM, 6-6.5MM, 6.5-7MM, 7-7.5MM, 7.5-8MM, 8-8.5MM, 8.5-9MM and 9-9.5MM
Lengths: 7 Inch Bracelet, 16 Inch Choker, 18 Inch Princess, 20 and 24 Inch Matinees, 30 and 34 Inch Operas, 54 and 100 Inch Ropes

All Mastoloni Akoya Pearl Necklaces are double strung and knotted using thread with our Signature Mastoloni 'M' clasp in 18KT Yellow or White Gold.

*These were developed to equal those of Kokichi Mikimoto and the Mikimoto Company. Though fine tuned over the years, Kokichi's sorting and grading processes remain the gold standard in the jewelry industry today.