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LAI TAI AN GEM LAB

Fei Cui Grading

翡翠分級

了解更多

Gem Gradings

寶石分級

Saphhire Gradings

祖母綠分級

Emerald Gradings

Fei Cui Gradings

Color Sapphire Gradings

Munsell Color Tree

了解孟塞爾顏色系統

HUE 色相

TONE 色調

SATURATION 飽和度

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