Any of the hard, bluish-gray marbles quarried in the Florence area of Pittsford, Vermont from 1785 to about 1932. The marbles were used for interior and exterior of buildings and for monuments. Examples are:
- Florence marble: a medium-grain, bluish-gray with dark gray and black veins
- Florence W: a hard, nonabsorbent blue stone
- Florence X: a hard, blue marble with faint marks.
Sources Checked for Data in Record
- Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
- Frank A. Lent, Trade names and Descriptions of Marbles, Limestones, Sandstones, Granites and Other Building Stones Quarried in the United States Canada and other Countries., Stone Publishing Co, New York, 1925