fire PDF Print E-mail
Written by Administrator   
Wednesday, 19 September 2007

fire. Flashes of the different spectral colors seen in Diamonds and other Gemstones as the result of dispersion. See dispersion.

first bye. A color-grading term used at the mines to indicate the finest quality of byewater stones. See bye.

first water. See water.

fisheye. A diamond whose pavilion is exceedingly shallow, producing a glassy appearance and a noticeable dearth of brilliancy. Girdle reflection appears inside the table of the stone


when viewed through the table. See

SHALLOW STONE.

fissure. An elongated cavity in a diamond's surface. It may or may not have occurred along the line where a cleavage reached the surface.

 
< Prev   Next >
Advertisement