検証できる事実、視覚的な判断、追加検査が必要な事項を区別するためのガイドです。
NEW RESEARCH
Technical guides for serious antique-diamond evaluation
How to Read a Diamond Grading Report for an Antique CutRead the guideAntique Diamond Condition: Girdles, Chips, Abrasions and RepairsRead the guideOld Mine Cushion Proportions: Table, Depth, Culet and OutlineRead the guideBuying a Large Antique Diamond Above Five CaratsRead the guideAntique Cushion Diamond AtlasRead the guide
