Queen Alexandra's Kokoshnik tiara is in the Russian fringe style popular in the late 19th century. A kokoshnik is an arched headdress word in Russia to anchor a headscarf. The original tiara is made up of 488 round diamonds set in platinum bars and was created by Garrard, the Crown Jeweller.

Queen Alexandra wore it often. Upon her death in 1925, it passed to Queen Mary, who also wore it. Upon the death of her husband, Edward VII, she retained the tiara as a personal possession rather than passing it to Queen Elizabeth (later the Queen Mother). When she died in 1953, it was inherited by Queen Elizabeth II, who wears it frequently.