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.