This book is more about plants than minerals. In fact the title page inside the book doesn't even mention them.

That said, there is a few dozen pages of content on the subject of gemstones. Here is partial excerpt of the index:

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CHARUBEL Collegian who trained for the Gospel 60 years ago, gave his whole life up for the love of Nature and the Study of the Supernatural Elements

Author of The Zodiac Symbolized, The Psychic Mirror, The North Pole Star and Region, The Seer Critic, The
Geozonic Spheres, The Occultist, Astrographical
Revelations, Psychological Experiences

January 1907

Index

270 TOPAZ. Applies to Fair People with Weak or Fragile
Constitutions, and inclined to become Despondent
and of Cold Habits. help to those who are out of sight and behind the scenes, or in the shade. It begets hopefulness in the hopeless.
Strengthens and Fortifies the Soul against the
evil and wicked persons.

274 AMETHYST.- False Vision and Degenerating Memory.
Colour Blindness, etc.

280 CORAL. Decrepit persons and prematurely old.
Quickener of the Senses. Good in growing defect of Eyesight from gradual loss of energy in the Optic Nerve (which is not traceable to any acute form of disease) is special remedy. Strengthener of the Mental Faculties.

286 ROCK CRYSTAL. Safeguard against Deception or
Imposition, and for those who think of better life and the pure in heart.

292 EMERALD. For those who aspire to Wisdom and
seek Enlightenment, and those who seek the good of life, etc.

299 DIAMOND. For Kings, Monarchs, Presidents, and people
of high standing, etc. State Authorities, and the advanced Occultists.

303 RUBY. (Negative). Most Precious of Gems. Grevious
Trial. Hopeless condition,etc. Heart-rending Grief.
Pangs of Bereavement. Terrible Disappointment.
Soother ofAgitation and Disburdenedof the Oppressed
Soul.

306 TURQUOISE. Sympathetic Stone. connector of
Souls. Developer of Inner Powers. Invaluable treasure to the thoughtful and meditative.

309 SAPPHIRE. Cure for Doubt and Despondency. Reviver
of Hopes that have been blighted. Disperses the future of its dread, and renders the Valley of Death redolent with sunshine.

313 RED GARNET. Inspiration. Remedy for Diabolical Influences, etc.

318 CARBUNCLE. Physically Strengthens and Vivifies the Vital and Generative Forces in human nature, for the lacking of Energy and the Sufferers from Anaemia, and those who are in want of animal courage. Tendency to render us regardless of sympathy. Sharpener of Business Propensities.
Invaluable treasure to the Dull, Lethargic, and the Sluggish Lymphatic, and people of Cold Habits.

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