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CRIMSON-RUBELLITE

Refractive Index: 1.62-1.64    hardness: 7.5

Origin: Brasil、Madagascar

CHRYSOBERYL

Refractive Index: 1.74-1.75    Hardness: 8-8.5

Origin: Russia、Brazil、Burma

APATITE

Refractive Index: 1.63-1.64    Hardness: 5.5-6

Origin: Canada、East Africa、Burma

TOURMALINE

Refractive Index: 1.62-1.64    Hardness: 7.5

Origin: Brazil、Madagascar

PERIDOT

Refractive Index: 1.64-1.69    Hardness: 6.5-7

Origin: China、Brazil、Pakistan

CITRINE

Refractive Index: 1.54-1.55    Hardness: 7.5

Origin: Spain、Brazil、Ceylon

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