Hanadama is a Japanese word that means "flower pearl". Hanadama Grade cultured pearls is a widely accepted pearl industry standard that designates the highest quality of Japanese akoya cultured pearls. Only approximately 2% of the annual Akoya cultured pearl harvest qualifies for the Hanadama Grade. There is no grade better than Hanadama.

Hanadama Grade pearls must be certified by the Japan Pearl Science Laboratory in Tokyo, Japan. Each pearl strand or jewelry item has a unique numbered certificate issued by Japan Pearl Science Laboratory. The certificate states that the strand is Hanadama Grade. See the Wikipedia entry about Hanadama for more information.

Pearl Oasis is the only on-line company which is able to offer a full range of sizes of Hanadama pearls. Take a look at our collection.  

The Hanadama Quality Standard Explained

The Japan Pearl Science Laboratory uses a variety of testing methods to determine Hanadama Grade quality. They include:

• magnification
• inner inspection by optical fiber
• spectro-photometric reflectance
• teri value analysis (luster value analysis)
• soft X-ray

The Japan Pearl Science Laboratory Hanadama Grade pearl quality standard states that:

1. The thickness of nacre of each pearl is guaranteed to be at least 0.40MM.
   (The measurement is from pearl surface to the center of pearl. Some on-line pearl sellers misstate this figure. These sellers often say that nacre thickness is 0.80MM when the JPSL certificate only guarantees 0.40MM.)
2. The luster of each pearl is guaranteed to be at least very strong. (determined by teri value analysis)
3. The surface quality of each pearl is guaranteed to have no more than very slightly imperfections. (determined by magnification).

Why purchases Hanadama Grade pearls from Pearl Oasis?

1. We offer all sizes of Hanadama Grade pearls from 6-6.5MM up to 8.5-9MM. Pearl Oasis is the only on-line company which is able to offer a full range of sizes of Hanadama pearls.   
2. We list Hanadama Grade pearl necklaces as one of a kind. The strand you see is what you will receive. You can see the picture of the pearls, and see the certificate on the details page for each necklace.
3. Hanadama Grade pearls come in temporary strands. Our designer finishes the necklace by professionally hand knotting the pearls and attaching a high quality, double sided 18K gold clasp. (Other retailers use 14K clasps of lower quality and gold content.) Each necklace is made in the USA with Hanadama Grade Japanese akoya cultured pearls.
4. Hanadama Grade pearl necklaces come in a high quality wood jewelry box.

The pearl lover can now compare “apples to apples” when it comes to pearl quality. We offer the best prices for Hanadama Grade pearls on-line. If you find a better price for the same size and length of Hanadama Grade pearl, please let us know it. We will match it or offer you better price. Click here to see our collection of Hanadama Grade Pearl Necklaces.