Crystal Springs Condos Hardyston is a much sought after community in Sussex County New Jersey. Something for everyone at Crystal Springs Condos and homes offer condos and detached units over $800,000.. A typical unit at Crystal Springs was once described like this...."Mountain views & easy access to the elevator, Biosphere Pool & Elements Spa. Maintenance fee includes under ground heated parking, elevator, all utilities, putting course & exterior building & landscaping. On-site award winning golf courses & restaurants."