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裂縫填充處理:將折射率近似於鑽石的物質填充至具有裂縫中，使羽裂紋不易觀察。判別原理：因為鑽石具有高導熱性，熱氣散的快。如果鑽石是假的，水氣會在鑽石上停留一小段時間。利用鑽石的導熱性，也有人把鑽石握在手裡判斷真偽，鑽石若變熱，就是仿冒品�