Color is not claimed as a feature of the mark.
The certification mark, as used or intended to be used by persons authorized by the certifier, certifies or is intended to certify that the services provided conform to the standard entitled "ANSI/NSC 373-2013" which is available from the certifier.
The mark consists of a circle with a lighter outer ring and darker inner ring, divided in the lower portion by two parallel lines. The words "GENUINE STONE" appear in the upper portion of the circle, above a stylized stamped coin showing a man using a hammer and chisel on a large stone. The stylized letters "G" and "S" appear on the stone. In the bottom portion of the circle, the phrase "NSC 373" appears above the word "CERTIFIED".
GENUINE STONE GS ANSI/NSC THREE SEVEN THREE CERTIFIED