Onyx is known to separate. It can help release negative emotions such as sorrow and grief. It is used to end unhappy or bothersome relationships. Onyx guards against negativity. Onyx jewelry is worn to defend against negativity that is directed at you. Black stones have protective energies in the sense that black is the absence of light, and therefore, can be used to create invisibility.
An excellent example of Mexican craftsmanship with a western flair. This wonderful embossed, horse-shoe link bracelet consists of three links with a bezel mounted, oval onyx cabochon positioned at the open end of the horse-shoe; the addition four links, two at each end, each hold a silver sphere. The bracelet measures 7 1/8" in length and 5/8" in width and has a box with tongue clasp. The piece is marked on the clasp. The condition is near mint with nice original patina.
Circa 1979 a new letter/number mark to indicate the silversmith and sterling standard was introduced in Mexico. The first letter indicates the city/area location "T". The second letter is the first initial of the last name of the silversmith (S). The last number(s) indicates that he is the 10th silversmith with a last name beginning with that letter to register at the city assay office