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 FRESHWATER PEARLS
Grading

Cultured Pearl Grading Systems

A standardized system of grading is used when purchasing pearls. Only then can a pearl be described according to mutually agreed upon and understood terms so that both the buyer and the seller can arrive at a fair price.

The pearl industry as a whole has not adopted a universally used standard grading system and the system used often depends upon the specific jewelers. The AAA-A system is the most commonly used grading system internationally; the A-D system, also known as the Tahitian system, is found also.

Freshwater Pearl Grading

Freshwater pearls are unique gemstones in that they are organic gems, produced by mollusks in rivers and lakes. The uniqueness of this gem makes quantifying their quality even more difficult than standard mined gems such as diamonds. While diamonds have the commonly accepted 4 C's of grading, pearl quality and value are determined by 6 factors.

These factors are: luster, surface, shape, color, size, and matching.

Freshwater pearls come in an incredible array of colors and shapes, and vastly varied values; it is important for buyers to have the ability to distinguish what is more valuable and what is less.

Freshwater Pearl Grade

Description

Pearl Images

AAA

Perfectly Round
Excellent Luster
Clean Nacre of 95% Inclusion Free Surface or Better
Excellent Matching
Top 1% of a Pearl farm's production.

AA+

Visibly Round
Excellent Luster
Clean Nacre of 90-95% Inclusion Free Surface
Excellent Matching
Top 5% of a Pearl farm's production.

AA

Near to off Round
Good Luster
Good Nacre of 80-90% Inclusion Free Surface
Good Matching
Top 15% of a Pearl farm's production.

A/A+

Off Round to Baroque
Moderate Luster
Medium Nacre of 70% Inclusion Free Surface
Good/Moderate Matching.

A

Very off Round to Baroque
Moderate to Low Luster
Moderate to Heavily Blemished Nacre
Moderate Matching.

Commercial/Beading Quality

Asymmetrical Baroque
Moderate to Low Luster
Heavily Blemished Nacre
Heavy Inclusions
Moderate to Poor Matching.

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