Answer:

JASPER

AnswerCrossword Clue
JASPERGreen chalcedony
JASPER"Flag" painter Johns
JASPERQuartz variety
JASPER"The Eyre Affair" author Fforde
JASPER"Harlem Light" artist Johns
JASPERRed quartz
JASPERRed-colored quartz
JASPERForm of quartz
JASPERGreen gemstone
JASPERArtist Johns
JASPERVariety of quartz
JASPERJohns of fame
JASPEROpaque gemstone
JASPER... Park, Canada's great Rocky Mt. game preserve.
JASPERNational Park in Canadian Rockies.
JASPERManhattan College athlete.
JASPERAncient symbol of March.
JASPERCanadian national park in Alberta.
JASPERYellow quartz.
JASPEROne for the rock hounds.
JASPERCanadian National Park.
JASPERCanadian national park.
JASPERQuartz.
JASPERColored quartz.
JASPEROpaque quartz.
JASPERReddish quartz.
JASPERGreen chalcedony.
JASPERQuartz
JASPERGreen quartz
JASPERManhattan athlete
JASPERAny Manhattan College athlete
JASPERManhattan College student
JASPERPop artist Johns
JASPERAlberta's ... National Park
JASPERThe "blood" in bloodstone
JASPERTraditional March birthstone
JASPERMarch birthstone, traditionally
JASPEROld March birthstone
JASPERQuartz type
JASPERPainter Johns