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Pearls Value Factors

Akoya Pearls value factors

Size: 2 mm to 9 mm, average 6 mm to 8 mm.
Shape: 70% to 80% round or near-round, 20% to 30% baroque and semi-baroque.
Color: Body color from White, Cream and some Yellow, Pink, Blue, may have Rose or greenovertone.
Luster: From excellent, good to fair.
Surface: Range from clean, lightly blemished to moderately blemished.
Nacre: From thick, medium to thin.

Chinese Freshwater Cultured Pearls value factor

Size: 4 mm to 11 mm, average 8 mm to 10mm
Shape: 2% round, near round and semi round, 60% oval, button and coin. 38% baroque and semi-baroque.
Color: White, cream, gold, peach, pink, purple, may have rose and or green over tone
Luster: From excellent to good to fair.
Surface: Range from clean, lightly blemished to moderately blemished.
Nacre: Thick.

Tahitian pearls value factors

Size: 8 mm to 14 mm, average 9 - 12 mm
Shape: 40% round and near-round, 20% oval, button and drop, 40% baroque and semi-baroque.
Color: Black, Grey, Green, Blue, Peacock, Aubergine and Pistachio.
Luster: From excellent to good to fair.
Surface: Range from clean, lightly blemished, moderately blemished and heavily blemished.
Nacre: Thick.

South Sea pearls value factors

Size: 8 mm to 15 mm, average 10mm to 13 mm
Shape: 10% to 30% round and near round, 40% to 60% oval, button and drop, 20% to 40% baroque and semi-baroque.
Color: White, Cream, Silver, Yellow (Gold), and Blue, can have rose or green overtone.
Luster: From excellent, good to fair.
Surface: Range from clean to lightly blemished.
Nacre: Thick.