Beryllium alumimum silicate. (Be3Al2(SiO3)6)
Emerald is a gemstone and a variety of the mineral beryl colored green by trace amounts of chromium and sometimes vanadium.
Known as a “stone of successful love"
Emerald Improves intelligence, sensitivity, loyalty, foresight, and enhances youthfulness.
It protects against temptation and seduction. Aids progress and advancement. Brings positive action and domestic harmony. Removes negativity in work. business and legal affairs.
Emerald helps one to understand the laws of the universe.
To read more about Pendulums, what they are, and how to use them, see https://thezentist.co.uk/articles-at-the-zentist/an-introduction-to-the-pendulum/