Agate is a rock composed of layers of quartz, sometimes of different colors. The composition of agate varies greatly, but silica is always predominant, usually with alumina and oxide of iron. The properties are supposedly to help harden gums and protect vision. (see Gem HealingA.G.H.

Sources: 15, “Agate”; 70, 197.



Turquoise has properties that help vision and promotes youth. It is a good amulet for preventing horsemen from having accidents, and from becoming weary. It supposedly moves itself when any danger threatens its possessor. (see Gem Healing) A.G.H.

Sources: 70, 197; 81, 418



Shewstone is a Crystal or gem used for scryingA.G.H.


Greer, John Michael. The New Encyclopedia of the Occult. St. Paul, MN, Llewellyn Worldwide. p. 437



Sapphire is thought to make the melancholy cheerful and maintain the power or vigor of the body. The stone helps the eyes, boils, rheumatism, and colic. The high priest of Egypt wore a sapphire upon his shoulder, and Aelian says that it was called truth. The Buddhists still ascribe a sacred magical power to it, and hold that it reconciles man to God. The sapphire is a good amulet against fear, promoting the flow of animal spirits, hindering argue and gout, promoting chastity, and preventing eyes from being affected by smallpox. (see Gem Healing) A.G.H.

Sources: 70, 197; 81, 347.



Ruby is the red variety of the mineral corundum, the second hardest mineral, surpassed only by diamond. Rubies are thought to ward off misfortune and ill health. Its healing powers are associated with the heart chakra: it balances love and all spiritual endeavours; improves self-esteem; strengthens neurological tissues around the heart; and is said to prevent miscarriages. Ruby is known as the stone of love and is capable of reconciling lovers’ quarrels. They are given as a symbol of success, devotion and integrity.

Ruby is the anniversary gemstone for the 15th and 40th year of marriage.

by Kurt Buehler




Pontica is a blue stone with red stars, drops and lines resembling blood. Supposedly it compels the devil to answer questions, and puts him to flight. A.G.H.

Source: 81, 328.



Polytrix is almost the only example of an inauspicious stone. This stone caused hair to fall off the head of anyone who possesses it. A.G.H.

Source: 81, 328.



The occult properties of pearls are recorded in ancient history: the Greeks and Romans wore the gems as amulets and talismans. Pearls, for this reason, were often set on crowns. Rich says, “Pope Adrian anxious to secure all the virtues in his favor, wore an amulet composed of a sunbaked toad, arsenic, tormentil, pearl, coral, hyacinth, smarag, and tragacanth.”

To dream of a pearl, is said to, mean many tears. Other properties are healing quartan ague when boiled in meat, healing ulcers when taken with milk, and for clearing the voice. They soothe and pacify the possessor as the comfort the heart and render him chaste. (see Gem Healing) A.G.H.

Sources: 70, 197; 81, 321.



The opal is said to recreate the heart, prevent contagion in the air, and dispel sadness; it is also good for weak eyes. Pliny’s description of this stone glows with enthusiasm, and he gives the preference to those that are shadowed as it were with the color of wine. The name pedores, applied to the opal, is recognized to indicate the beautiful complexion of youth. Opal also gives protection and harmony. (see Gem Healing) A.G.H.

Sources: 70, 197; 81, 308.



Onyx has properties that resemble those of jasper, beside which it increases saliva in boys, and is said to produce terrible shapes in dreams. When applied to the eye it acts as if it were alive, by creeping about and removing anything noxious. A.G.H.

Source: 81, 307.