Graphics are a part of many engravings on glassware. When graphics or text is viewed on a computer monitor, it is generally displayed in black. But it is important to understand that whatever is engraved will turn frosted white on the clear glass. Compare it to a photo negative, where anything in black in the layout will be engraved, but it will ultimately be frosted white on the glassware. The clear glass is darker than the engraving, and so the clear parts will take on the role of “black.”
With many graphics, this change doesn’t make much of a difference. In the simple cases of line art, text, or silhouette-type graphics, the image will really look the same whether viewed in black on white (as on the computer monitor) or viewed in frosted white on clear glass (as in the engraved version).
The issue ends up being artwork where the eye basically “knows” that certain parts of an image should be white (or black). For example, consider the image of a bride…we would expect that her dress will be white (and not black). If an image is shown with the wrong polarity, it won’t look correct. The result will be much like viewing the negative of a photograph….you can make out the subject matter, but it won’t look quite right.
With certain graphics, in order to preserve the relative relationship between black and white it is recommended to invert the image before it is being engraved.
See the following 2 images as an example.
Below you will find an image of the final engraving. It is available in my Etsy shop.