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Quality & Grading
How we describe freshwater pearl quality — and what a grade label does and does not tell you. This page exists so that a quotation and a delivered order can be compared on the same terms.
What actually determines a pearl's quality
A grade label is a summary. These are the factors it summarises — and the factors you should ask about directly.
Luster
How sharply light reflects from the pearl surface. Luster is generally the first thing a buyer notices and the hardest factor to describe in words. The practical way to agree on it is a physical reference sample: much of what is called “good luster” depends on seeing it in person.
Surface
Natural surface characteristics — small marks, blemishes and texture. In practice, buyers accept some surface variation on faces that will not be visible in the finished piece, and require cleaner faces where the pearl is the focal point. Tolerance should be agreed per product, not assumed.
Shape
Roundness. Freshwater pearls are not all round — round, near-round, oval, button, coin, drop, baroque and keshi are all normal, legitimate product categories at different price levels. Round is not automatically “better” for every design; it is simply more expensive to match.
Color
Freshwater pearls occur naturally in white, cream, pink, lavender, purple and peacock-related tones. Color consistency within a strand or a matched set usually matters more than the color itself. Where color has been achieved by dyeing, the treatment is declared.
Size
Measured in millimetres and quoted as a band rather than an exact figure, because natural pearls vary slightly. Bands such as 7–8 mm are the normal commercial unit. Averages are not substituted for the band.
Matching
Consistency across the order — pearl to pearl within a strand, pair to pair within an earring set, and lot to lot across a repeat order. Matching is where most of the labour sits, and it is the factor most often left out of a specification. We confirm it explicitly.
Two terms worth understanding before you buy
Grade (AAA, AAAA and similar)
Grade labels are commercial shorthand used across the pearl trade. Different suppliers apply them differently, and they are not administered by any single international standards body.
We therefore treat a grade as a starting point for a conversation, not as a specification. Where a grade is used in a quotation, it is accompanied by the factors above so both sides know what is actually being agreed.
Treatment
Freshwater pearls may be untreated, bleached, dyed or otherwise treated to achieve a particular appearance. Treated pearls are still pearls — the point is disclosure.
- Dyed pearls are declared as dyed.
- Naturally colored is used only where the color is not the result of dyeing.
- Imitation is used only for non-pearl material, and never for a real pearl.
These distinctions matter for marketing and labelling in the United States and other markets.
Why freshwater pearls are different
Freshwater pearls are cultured in mussels using tissue nucleation, which allows several pearls to be grown in a single mussel. This is why freshwater pearls can be produced in commercial volumes across a wide range of shapes and colors, and why they sit at a different price level to saltwater pearl types.
For buyers, the practical consequence is that freshwater pearl quality is achieved mainly through selection and matching rather than through a single production decision. That is where we concentrate the work.
How to use this page. Bring these factors into your RFQ. A specification that names size band, shape, color, luster target, surface tolerance and matching requirement can be quoted precisely and checked on delivery — a specification that says only “AAA” cannot.
Grading questions
Is AAAA the highest international pearl grade?
There is no single international grading authority that issues pearl grades of this kind. Grade labels are commercial references used within the trade and applied differently by different suppliers. We do not present any grade as an official international standard.
Can you send a certificate?
We do not claim third-party or laboratory certification unless it genuinely exists and can be provided for the specific goods. If you require certification for your market, raise it before quotation so it can be assessed honestly rather than promised.
How do I know the delivered order matches what I approved?
Through a specification confirmed in writing and, where required, a physical sample that both sides treat as the reference standard. Quality control then checks the order against that standard before shipment — see Quality Control.
Do you use terms like “thick nacre” or “investment value”?
No. We avoid claims that cannot be verified for a specific parcel of pearls. Descriptions are kept to the factors we can actually check and agree with you.
Want a quality standard confirmed before you commit?
Send your target specification or ask for a sample. We will confirm the standard in writing rather than in adjectives.