Samantha Cawthorne, of the 1400 block of Georgia Avenue, died Sunday night of a head injury at AnMed Health Medical Center in Anderson, S.C., said Pickens County Coroner Kandy Kelley.
Cawthorne was skating alone about 2:30 p.m. Sunday on the university's garden trail when she struck a guardrail, according to a university police report.
She was not wearing a helmet, the coroner said.
On Friday, Cawthorne graduated magna cum laude with a degree in physics. She was scheduled to work for the National Institute for Standards and Technology, according to a Clemson news release.
Cawthorne was a 2006 International Baccalaureate graduate of North Augusta High School. She and her family moved to North Augusta from Maryland 10 years ago.
She left an impact on the faculty at her high school, said Dianne Smiley, her guidance counselor at North Augusta High.
"She was a great student, a very special young lady," Smiley said. "It's a tremendous loss."
At Clemson, Cawthorne was president of the Society of Physics Students and a member of Phi Beta Kappa Honor Society. She was also a Dixon Fellow and a graduate of Calhoun Honors College.
In a statement, her father said she treasured her friends and experiences at Clemson.
She is survived by her parents, John and Janine Cawthorne; brother Zachary Cawthorne; and sister Rebecca Cawthorne. The funeral will be at 11 a.m. Thursday at St. Bartholomew's Episcopal Church.
In lieu of flowers, the family asks that donations be made to disaster relief in Haiti at www.edusc.org.