- Usually on the neck or lip of the bottle caused from the cooling of hot
glass. This has the appearance of lines in the glass.
BRUISE - A
ding in the bottle with no glass missing sometimes changing the spot to a white
color. Some people refer this to a fish eye.
CASEWEAR - Scuff
marks where bottle was rubbing something.
CHIP - A piece of
CRACK - A very noticeable fracture in the glass.
FACTORY IMPERFECTIONS - Bubbles, weak embossing, incorrect
seams, crooked shape. Imperfections that were made at time bottle was produced.
FLEA BITE OR NICK - A small pin head size chip no bigger then
FLASH - A hard to see small crack in the glass.
Sometimes you must hold the bottle just at the right angle to see it.
IRIDESCENCE OR OPALESCENCE - A opaline or rainbow color from
minerals that are in the ground. Very common on dug bottles that were in some
types of soil.
POTSTONES - Impurities in the glass batch leaving
small specks or pieces.
STAIN - Residue from the contents of the