You are looking at a Tiger's Eye skull pendant.

This stone is most recognized for bringing money, psychic protection, courage, luck confidence, willpower, clear thinking and speaking to show us the personal power in life that we have. Very versatile for the Yellow/Solar Plexus and Crown Chakra. Tiger's Eye works on our mental plane by amplifying thinking and manifesting what you think about. Helps separate thoughts from feelings, more centered, less emotional. Tiger's Eye allows us to recognize both our talents and our faults. It can reveal your true needs without our self-serving or rigid mental attitudes getting in the way. Use Tiger's Eye with malachite or pearl to benefit from their synergy for mental/emotional balance and true understanding. This stone helps change anxiety, fear and obsessiveness into practicality and logic. Has the grounding energy of the earth, but is embellished with a glowing warmth. A stone for people who need more confidence to accomplish their goals. Draws helpful people and material things to the wearer. Centers energy and mental focus. This stone helps us to find our closest version of perfectionism without obsessive behavior.