E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Precious Stones.
(1) Each month, according to the Poles, is under the influence of a precious stone:
1
January
Garnet
Constancy.
February
Amethyst
Sincerity.
March
Bloodstone
Courage.
April
Diamond
Innocence.
May
Emerald
Success in love.
June
Agate
Health and long life.
July
Cornelian
Content.
August
Sardonyx
Conjugal felicity.
September
Chrysolite
Antidote to madness.
October
Opal
Hope.
November
Topaz
Fidelity.
December
Turquoise
Prosperity.
(2) In relation to the signs of the Zodiac:
2
Aries
Ruby.
Taurus
Topaz.
Gemini
Carbuncle.
Cancer
Emerald.
Leo
Sapphirc.
Virgo
Diamond.
Libra
Jacinth.
Scorpio
Agate.
Sagittarius
Amethyst.
Capricornus
Beryl.
Aquarius
Onyx.
Pisces
Jasper.
(3) In relation to the planets:
3
Saturn
Turquoise
Lead.
Jupiter
Cornelian
Tim.
Mars
Emerald
Iron.
Sun
Diamond
Gold.
Venus
Amethyst
Copper.
Mercury
Loadstone
Quicksilver.
Moon
Crystal
Silver.
The ancients divided precious stones into male and female. The darker stones were called the male, and the light ones were called the females. Male sapphires
approach indigo in colour, but the female ones are sky-blue. Theophartos mentions the distinctio.