Do you know someone who can suck the life out of you? Put a stop to it! Protect yourself with a magical shield!
Wear or carry BLACK TOURMALINE or LABRADORITE so that they are close at hand. Put them in your pocket instead of a sachet or bag. Their energy will protect you 24/7.
Find yourself in a situation where you would need a boast of protection? Hold one of the STONES in your RECEPTIVE HAND (the hand you do not use to write) and allow the protective energy to flow through you.