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Ruby
Rubis

Mineral Grimoire

Ruby

4 min read

The Ruby is a red that does not hide. A stone of rank, victory, and desire, it has found its place in crowns, treasures, and protective talismans. Western magic gives it the fire of action: courage, power, passion, wealth, and the joy of living.

This ardor demands direction. The Ruby does not teach domination or glorified exhaustion; it accompanies what one chooses to bring to life, defend, or openly embrace. Its language is that of a warm will, held in check by honor.

The red of corundum

The Ruby is the red variety of corundum, an aluminum oxide. Chromium produces its color and can also cause a red fluorescence under certain lighting. The other colors of corundum are called Sapphire.

With a hardness of 9 on the Mohs scale, the Ruby resists scratches well. It may display asterism: when cut as a cabochon, a network of inclusions reflects a moving star. The GIA describes its gemological identity and distinguishes color, origin, treatments, and synthetics.

King of gems and stone of rank

In the languages of India, the Ruby bears titles associating it with the king of gems. In medieval and Renaissance Europe, its red color linked it to blood, the heart, rank, and victory. It adorns insignia of power and religious objects.

Ancient inventories must nevertheless be read with caution: several famous “Rubies” were red Spinels, impossible to distinguish without modern methods. This gemological correction does not erase their talismanic history; it reminds us that color long preceded mineral species.

The fire kept in the stone

Lapidaries described the Ruby as a light or ember capable of glowing in the darkness. The image does not refer to a real lamp: it expresses the intensity of its color and the value placed on an ardor that endures.

This ember suits courage, desire, and reputation. It can also signal excess: anger, rivalry, reckless spending, or the need to win at any cost. Work with the Ruby benefits from beginning with a clear boundary.

Fire under oath. A free flame can illuminate or devour. The Ruby becomes a talisman when desire is given a rule: act with courage, protect without possessing, succeed without denying yourself.

Lion, Mars and Fire

In The Magic and Science of Jewels and Stones, published in 1922, Isidore Kozminsky places the Ruby under Leo. He associates it with passion, affection, power, victory, happiness, protection, the discovery of treasures, and the removal of obstacles.

Scott Cunningham attributed Mars and Fire to it in 1988, along with wealth, power, joy, and defense. Tuesday favors action and courage; Sunday, associated with the Sun and Leo, suits radiance, authority, and visible success.

Courage, desire, power, and wealth

For courage, wear the Ruby when undertaking an action you have already decided on. Name the actual risk, the means of reducing it, and the reason to move forward. The talisman supports the prepared act, not recklessness.

For love, write what you are willing to give and what you refuse to sacrifice. Place the stone between the two sentences. Desire thus remains ardent without becoming possessive.

For wealth or authority, place the Ruby on a contract, project, or quantified objective. Ask for the strength to keep your word and use the result with dignity. Magical power begins here with responsibility.

The Red Flame Oath

On a Tuesday, light a red candle and place the Ruby in front of it, away from the heat. Write down an action you have been putting off, then the rule that should govern it. Read both sentences while standing.

Say: “I kindle what I can guide. My strength serves my oath.” Pass the stone over the paper without touching the flame, then keep it with you until the action is completed. Extinguish the candle without abandoning the commitment.

Correspondences and references

Reference Correspondence
Nature Red variety of corundum
Hardness 9 on the Mohs scale
Sign Leo according to Isidore Kozminsky
Planet Mars according to Scott Cunningham; solar affinity through Leo
Element Fire
Days Tuesday for Mars; Sunday for the Sun
Areas Courage, desire, victory, power, wealth, joy, and protection
Ritual act Give desire a rule, then act
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