Yes, Violet Tears is definitely a goth band because most of their albums belong to the Gothic Rock and Ethereal Wave genres, which are among the core subgenres of goth music. Albums like Cold Memories & Remains, Breeze Of Solitude, and Outside Your Door are examples of their goth sound.
Some of the other goth artists that are similar to them are Mors Syphilitica, Collection d'Arnell-Andrea, and Siddal.
Violet Tears is located in Italy, Bari, active in 1998 — present. You can find more information about Violet Tears on their GothDB band page.