High-quality pearls carefully selected by pearl professionals

At Mori Pearl, we meticulously and strictly inspect every single pearl.
We are committed to pearls with high quality and safety as our top priority, so that we can deliver pearls that will be a lifelong companion.

For inspection, we use a light check method, where light is shone through the pearl to check the nacre layer and nucleus.
If the light check reveals a cracked nucleus, we exclude such pearls, no matter how beautiful they may appear, as there is a risk of them breaking during use.

The ability to check all pearls before purchase is thanks to the strong trust relationship between Mori Pearl and our producers.
That's why Mori Pearl's collection features only the top 30% of carefully selected high-quality pearls.

Main criteria for pearl quality

At Mori Pearl, we have established four unique criteria for evaluating pearls.
Pearls that excel in all these aspects are further evaluated based on size, color, and other factors.

Mori Pearl's standard collection of Akoya pearl necklaces, our classic item, is offered in different grades based on the following criteria.
To ensure your peace of mind when purchasing, we provide a "Grading Report" that analyzes the pearl's quality.
*Products other than Akoya pearl necklaces are offered at Regular quality or higher, so a Grading Report is not included.

01 Nacre Thickness

This refers to the thickness of the nacre layer; the thicker the layer, the higher the quality.
Pearls with a thick nacre layer can capture more external light and penetrate deeper, resulting in more beautiful interference colors and luster.
Pearls with a short cultivation period tend to have thinner layers, but Mori Pearl uses X-ray fluoroscopy to determine the thickness, and we only handle pearls with a thickness of 0.3mm or more.

02 Luster

This refers to the unique optical phenomenon of pearls.
The combination of surface gloss and light interference from the nacre layer creates luster (teri), giving pearls their distinctive brilliance.
The more uniform the nacre layer, the more reflected light there will be, resulting in a beautiful, lustrous sheen.

03 Surface

The surface grade of the pearl, including the presence and type of blemishes (dimples) and smoothness, is evaluated on a 6-rank scale.
Blemishes that naturally form during cultivation vary from minor surface marks to protrusions.
Generally, the smaller and fewer the blemishes, the higher the value. Mori Pearl typically uses pearls of 2S or higher, but we select beautiful pearls from a comprehensive perspective, considering the balance with nacre thickness and luster.

04 Shape

Shapes are evaluated on a 4-rank scale: Round, Semi-Round, Semi-Baroque (slightly irregular), and Baroque (irregular).
The closer to a perfect sphere, the more beautifully the interference is displayed, and generally, round pearls are considered the rarest and most highly valued.
In addition, there are many unique natural shapes such as oval (elongated) and drop (teardrop), and we are particular about designs that beautifully showcase each shape.

Three initiatives for your peace of mind

Issuance of a Certificate Card

Customers who purchase products from Mori Pearl receive a "Certificate Card" for all products, stating the product name and purchase date.

This card certifies that the product has met Mori Pearl's strict inspection standards and was legitimately sold by our store, so you can confidently use it as a gift for your loved ones.

Warranty Service

Pearl Aftercare Service

In addition to the above warranty, we offer a free aftercare service for products purchased at our store.
Customers wishing to use the aftercare service should present the Certificate Card provided at the time of purchase.

Necklace Restringing

Available any number of times after purchase.
To enjoy your pearls for a long time, both their beauty and comfort are important.
We recommend regular restringing.

Ring Resizing

One resizing is complimentary within one year from the purchase date.
*Subsequent resizings will incur a fee.
Pearl rings can be passed down through generations, with adjustments made over time.
This ability to be enjoyed across eras is one of the great appeals of pearl rings.

Pearl Cleaning

Regular maintenance is essential to keep delicate pearls beautiful.
Please use this service when you notice dirt or dullness.

For products purchased outside of our store, aftercare services are available at the Pearl Hospital, so please feel free to inquire.