crush:lightly pitted condition with a dull gray appearance.
dig:deep, short scratch
gaseous inclusion:round or elongated bubble in the glass.
linear blemish: scratches, rubs, digs, and other similar imperfections.
point blemish: crush, knots, dirt, stones, gaseous inclusions, and other similar imperfections.
rub: abrasion of a glass surface producing a frosted appearance.
scratch:damage on a glass surface in the form of a line caused by the movement of an object across and in contact with the glass surface.
***View specimen from a distance of 6’***