How to read the band →
Solid line = floor (spellings that unambiguously belong to the group). Shaded band up to the dashed edge = ceiling (the most it could reach if every ambiguous spelling counted here).
Crystal
Crystal is now well below its former popularity. All-time it's been given to 478,858 U.S. babies, the 1,189th most common name by sound today, peaking at 25,601 in 1982, with 362 in 2025.
By sound, Crystal also includes the spellings Krystal, Cristal, Chrystal, Krystle, Kristal, Christal, Christel.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).