Which term describes hazy surface areas that result from excessive heat or from uneven polishing caused by structural irregularities; also called polish marks?

Which term describes hazy surface areas that result from excessive heat or from uneven polishing caused by structural irregularities; also called polish marks?

• A. Bruise (Br)
• B. Burn Marks (Brn)
• C. Cavity (Cv)
• D. Bruting

Answer: (B)

Hazy surface areas caused by excessive heat or uneven polishing are called burn marks. These blemishes appear as cloudy or milky patches on the diamond’s surface because overheating or irregular polishing disrupts the crystal surface, leaving areas that lack full transparency. Burn marks are also referred to as polish marks, since they originate during the polishing process. This differs from a bruise, which comes from impact and shows up as an internal cloud or dark spot, not a surface haze created by polishing. A cavity is a hole in the stone, another distinct type of defect. Bruting is a shaping method used to form the diamond, not a surface flaw.

Hazy surface areas caused by excessive heat or uneven polishing are called burn marks. These blemishes appear as cloudy or milky patches on the diamond’s surface because overheating or irregular polishing disrupts the crystal surface, leaving areas that lack full transparency. Burn marks are also referred to as polish marks, since they originate during the polishing process.

This differs from a bruise, which comes from impact and shows up as an internal cloud or dark spot, not a surface haze created by polishing. A cavity is a hole in the stone, another distinct type of defect. Bruting is a shaping method used to form the diamond, not a surface flaw.