This is a wonderful designed carnelian necklace with the Hebrew letters combination for protection.
The carnelian is a powerful motivation stone called the "Self-Esteem Stone." Carnelian has mental grounding power, it teaches you to focus on the present for the moments in life when all your mental powers are necessary for success at a single, important task and is a source of confidence, eloquence and inspiration.
Carnelian can assist in getting the mind out of mental ruts and back on track for success. In the long-term, it bolsters ambition and drive and reminds you of the future’s goals, hence becoming a powerful tool in major decision-making.
Overall, many hold Carnelian dear as a stone with the ability of protection, bolster confidence and generally enhance and expand the experiences of life.