Classification and Value

Cultured pearls from Tahiti (Polynesia) are classified according to several precise criteria, defined by the profession and international standards. Here are the main classifications:

1. Classification by form

• Round: perfect sphere (the rarest and most precious).
• Semi-round: almost spherical, with a slight irregularity.
• Button: flattened on one side.
• Drop: pear or teardrop shaped. Also highly prized with high value.
• Circled: with rings or streaks around it.
• Baroque: free, irregular and unique shapes.

2. Classification by area (quality)

Assessed according to the presence or absence of imperfections:

• « TOP GEMME » category: almost perfect surface, almost invisible imperfections.
• Category A: very clean surface, maximum 10% visible imperfections.
• Category B: surface with slight imperfections, less than 30%.
• Category C: visible imperfections but limited to less than 60%.
• Category D: many imperfections visible but not on the entire surface.

3. Classification par luster (shine)

• Excellent: Vivid shine, sharp mirror.
• Very good: bright and sharp reflections.
• Good: Medium gloss.
• Medium to low: dull or diffuse reflections.

4. Classification by color

Main color	Possible reflections	Rarity	Symbolized
Deep black	None or very shade	Very rare	Mystery, elegance, prestige
Light to dark grey	Silver, steel	Frequent	Sobriety, refinement
Peacock	Green, blue, golden	Prestigious	Wealth, exoticism, nature
Blue, eggplant	Purple, indigo	Rare	Originality, creativity
Bronze, gilded	Coppery, warm brown	Quite rare	Warmth, modernity, energy

5. Their dimensions

• The pearls are usually between 8 mm and 16 mm in diameter.
• Smaller pearls (7–9 mm) are more common, while larger pearls (15–16 mm) are much rarer and therefore much more expensive
• Some exceptional pearls can exceed 18 mm, but they are extremely rare and highly sought after. 

In summary, a Polynesian pearl is judged by its shape, surface, luster, dimensions, and color, which determines its rarity and value.