About this star:

A star at the top of the Cross, Crux.

Gacrux is derived from "Gamma" of "Crux".

There is little traditional mythology associated with these large stars in Crux because the Cross, was unknown to the ancients by its present title, its four chief stars being noted by Ptolemy (in Egypt where it was visible) as a part of the Centaur Centaurus, which now surrounds it on three sides. Bayer, who invented Crux in 1679, outlined it over the hind feet of the Centaur, these now are alpha (Acrux), beta (Mimosa), gamma (Gacrux), and delta Crucis (unnamed), —alpha at the foot, gamma at the top, with beta, and delta (unnamed), as the transverse. (Allen).

Crux denotes a strong spiritual influence. It indicates willingness to accept sacrifice and gives fortitude in sorrow. The Cross gives choices that bring hopes and fears; making decisions about which road to take in life, learning to discriminate. There is often a lasting emotional or psychological wound, or wounds from accidents etc. There can be dormant skills or powers which in order to tap into them may require giving something up, or letting something go; as the Centaur (Centaurus) did in giving up his immortality to Prometheus, or forgiving as Christ did on the cross.

Influence of the constellation:

"Crux is said to give perseverance, but many burdens, trials and responsibilities, together with much suffering and many hardships. In connection with rulerships of countries it may be noted that Brazil was named the Land of the Holy Cross by the discoverer Cabral on May 1st 1500, and that the constellation Crux has been represented on the postage stamps of that country". (Robson).