May you wear this necklace as a reminder to trust the universe. You are in the right place at the right time. Everything is unfolding for you in the way it is intended too.
Alchemically, the sun is sol and is esoterically symbolic of the mind or intellect. Gold is considered the material of the sun in outwardly symbolic practices of alchemy.
The planetary sign of the sun (a circle with a dot in the center) is also an alchemical symbol of origin signifying completion of the Great Work. Furthermore, this sun symbol represents the Self in its relation to the cosmic whole.
This is also the case in astrology where the sun is symbolic of the Self that is expressed outwardly - the self that shines openly to our friends, family, co-workers, etc. The sun position at our time of birth gives special illumination as to our characteristics. It's as if the sun shines upon our symbolic selves and makes us most visible to the world
The sun resonates with male energy in most cultures. However, Celtic perspective places feminine power within the sun's rays. Likewise, ancient African, Japanese, Germanic, and some Native American tribes all hold the sun as a feminine energy.