a·bra·sion | ə-ˈbrā-zhən
A bruise or scratch on the surface of a stone
The cutter’s oversight in substandard polishing, or failing to ensure the wheel is properly charged with the oil-and-diamondpowder mixture. Additionally, diamonds may be abraded through daily wear and tear. Miniature scores may appear on the crown of a mounted diamond after numerous years of harsh contact against dense surfaces. These nicks may appear by way of petite sketches on facet joints which reveals white lines in lieu of acute, crisp facet edges. Antique and other aged or excessively used diamonds are prone to abrasions. Stockpiling diamonds simultaneously in a paper-like package may also cause abrasions and scratches on a diamond’s surfaces. However, this is typical of lower quality or smaller stones as the worth would not be affected as much as it would with larger, more extoriontant stones.
切割師對不合格拋光的疏忽，或未能確保砂輪正確裝入油和金剛石粉末混合物。 此外，鑽石可能會因日常磨損而磨損。 經過多年與緻密表面的劇烈接觸後，已鑲嵌鑽石的冠部可能會出現微型刻痕。 這些刻痕可能通過刻面關節上的小草圖出現，顯示白線代替銳利、清晰的刻面邊緣。 古董和其他老化或過度使用的鑽石容易磨損。 同時將鑽石存放在紙質包裝中也可能導致鑽石表面出現磨損和划痕。 然而，這對於質量較低或較小的寶石來說是典型的，因為價值不會像更大、更昂貴的寶石那樣受到影響。