In 1916, Kikichi Mikimoto harvested the very first big large amount of cultured akoya pearls in Ago Bay, Japan. These japanese akoya pearls were in contrast to any the world had recognized. They were whole pearls with a mother-of-pearl nucleus produced by a culturing technique known as grafting. A small bead was put into the host oyster’s reproductive organ in addition to a small piece of donor mantle tissue – the catalyst of pearl sac creation and nacre deposition – the development of a pearl.

Today akoya pearls are still a well liked staple in each and every woman’s precious jewelry collection and the most popular kind of pearl marketed at fine jewelry stores round the world. They are known for their perfectly circular form, sharp original appeal, and amazing white entire body colours with tips of rose and sterling silver overtones.

Deciding on a fine strand can be really difficult, however. Not in contrast to gemstones, the quality of a strand will determine its elegance, sturdiness, and ultimately its price. Consumers require to be familiar with the Gemological Institution of America’s (GIA) five value factors created in 1967, and utilized to assess the caliber of an akoya pearl. These are dimension, shape, luster, nacre density, and surface area.


Akoya pearls are often fairly little. The normal size is 7 mm in diameter, and the typical princess length is 17 to 18 inches. Most fall to the dimension range of 3 millimeters to as large as 10 millimeters. When other worth aspects are consistent, bigger akoya pearls are more beneficial.


Whilst form is a crucial value sign of other sorts of cultured pearls like fresh water and Tahitian, akoya pearls are typically very circular. This is due to the flawlessly spherical bead inserted to the oyster. Nacre is deposited around the bead and a lot akoya pearl creation is round consequently. Other designs such as symmetrical drops and baroques do occur, but round pearls are considered more valuable.


Luster is the way of measuring quality and amount of light demonstrated from the surface area of a pearl. Akoya pearls provide sharp original appeal and reflection much like the top of any mirror. The sharper and much more vibrant the representation, the better valuable the pearl. Original appeal is an essential value factor to consider when buying a strand of blue akoya pearl.

Nacre Density

The nacre thickness of the akoya pearl is really important. Today’s pearl market is overrun with what is known inside the industry as “short tradition” akoya pearls. These pearls happen to be harvested too soon and never come with an adequate covering of nacre over their mother-of-pearl bead. These pearls are generally found on eBay and then in fashion jewelry shops for very low prices. Nevertheless the caveat is the fact that these pearls is not going to last, nor can they exhibit a razor-sharp metallic shine. Luster and sturdiness are immediately correlated towards the pearl’s nacre thickness.


Cultured pearls are definitely the only naturally produced gemstones in the world. They do not need to be cut or polished to show off their beauty, so each is going to be as distinctive as being a snowflake, demonstrating different types of growth characteristics. These growth qualities, regardless how small or how big, are known as inclusions or imperfections. Simply because all cultured pearls exhibit some type of development characteristic the US Federal Trade Commission payment has disallowed the usage of the phrase “flawless” when explaining cultured pearls.

Despite the fact that growth qualities are universally apparent in cultured pearls, the level of these characteristics is assessed within the surface high quality of the akoya pearl. When other grading factors are steady, the less blemishes or inclusions visible towards the nude eye, the better valuable the pearl.

A – AAA Grading System

Even though a universally approved grading system for cultured akoya pearls does not presently exist, there does exist within the business best practice specifications which use a grading system of A – AAA and hanadama.

A strand of hanadama quality pearls is certainly one which has been certified by the Pearl Science Lab of China as demonstrating the very best quality characteristics in terms of form, luster, surface area, and nacre density.

In order for the akoya strand to get rated AAA all value factors should fall inside the top five percent in the quality criteria. AAA grade strands are seen as the very best, low-hanadama certified strands within the world.

A strand or pearl not meeting the requirements of AAA is certainly one that falls flat to arrive at the top five percent of each one of the quality criteria. A quality of AA will mean the strand falls in the top 20 %, and a grade of AA would then mean the strand falls among grades AA and AAA.


There is a quickly-diminishing debate on cultured akoya pearl origin and its relationship to high quality and worth. It absolutely was once believed that just those from China were the finest high quality and most valuable. Today it really is well known that tahitian black pearl can also be produced in Southern Korea, China, Vietnam, and even Melbourne. Pearls from Melbourne and The far east happen to be found to get thicker nacre than uxrkdv Japanese alternatives, and are frequently of better general high quality. Source is not a worth factor used to grade cultured akoya pearls.

By understanding the worth factors connected with cultured akoya pearls, a purchaser can make an informed choice when choosing the ideal strand. The first step is to discover a merchant that understands the intricate elements of akoya pearl grading and abides through the strictest standards. This will most often be a merchant which specializes in pearls and definately will possess a large selection of various sizes and grades for quick comparison.

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