Around 1996, I made the beveled glass door and transom for a couple in the Church Hill area of Richmond, Virginia. If you look closely, the bevel widens from the center to the borders, creating a variable bevel.
I used 3/8-inch glass instead of the traditional 1/4-inch to match the heavy historical door and molding. There are places in Richmond where one can find beveling on 3/8-inch glass, but I have never seen variable bevels before.
I’m sure I didn’t charge them extra for all the time that went into this project, but I chalked it up as a learning experience and good marketing.