Gemological Certificate
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Definition
An official document issued by an independent gemological laboratory that records the graded characteristics of a gemstone, including measurements, weight, color, clarity, cut, and any detected treatments.
Detailed Explanation
独立した宝石学ラボが発行する公式文書で、宝石の寸法・重量・カラー・クラリティ・カット・検出された処理などの評価済み特性を記録しています。GIA・AGS・GRS等の証明書が代表的です。