Medieval alchemists were primarily focused on the transmutation of base metals into gold, a process known as chrysopoeia.

The alchemical symbol for gold is ☉, which resembles the sun.

The philosopher's stone, also known as Lapis Philosophorum, was a mythical substance believed to have the ability to transform base metals into gold.

Ptolemy, a Greek astronomer and astrologer, is credited with developing the concept of the zodiac and creating the first comprehensive astrological system.

The Ptolemaic System, developed by Ptolemy, was the geocentric model of the universe that was widely accepted in medieval astronomy.

Ptolemy's 'Tetrabiblos' is a seminal work in Western astrology, providing a comprehensive guide to astrological principles and practices.

Medieval astrology was primarily used for predicting future events, such as the outcome of battles, the success of voyages, and the fate of individuals.

The four classical elements in medieval alchemy were Earth, Air, Fire, and Water.

Cupellation was the medieval alchemical process of purifying metals by heating them in a crucible with lead.

Ptolemy developed the concept of planetary aspects, which described the angles between planets in a horoscope and their influence on human affairs.

Sublimation was the medieval alchemical process of converting a solid substance into a vapor without passing through the liquid state.

Ptolemy developed the concept of astrological houses, which divide the zodiac into twelve sections, each associated with different aspects of life.

Distillation was the medieval alchemical process of separating a mixture of liquids by heating it and collecting the vapors.

Ptolemy developed the concept of astrological transits, which describe the movement of planets through the zodiac and their influence on human affairs.

Fusion was the medieval alchemical process of converting a solid substance into a liquid.