The first century Jewish historian Josephus proclaimed a connection between the twelve stones in the Aaron's breastplate, the twelve months of the year and the twelve signs of the zodiac.The Breastplate of Aaron, referred to in Exodus 39:10-14:

The custom of actually wearing birthstones first gained popularity in Poland in the fifteenth century. Tradition suggested everyone wear the birthstone for each month, since the powers of the gemstone were heightened during its month. For the fullest effect, individuals needed to own an entire set of twelve gemstones and rotate them monthly.

Often combined with modern birthstone lists, traditional birthstones are older society-based birthstones. Since many different cultures had their own list, jewelers' lists are often inconsistent over what constitutes a traditional birthstone. The table below contains many stones which are popular choices, often reflecting Polish tradition.

The Gregorian calendar has poems matching each month with its birthstone. These are traditionally the stones in English-speaking societies. It is not known whether these verses below are of the originally Gregorian calendar or not. In fact Tiffany & Co. published these poems "of unknown author" for the first time in a pamphlet in 1870.

Three of the verses are repeats,

By her who in January was born
No gem save garnets shall be worn
They will ensure her constancy
True friendship and fidelity.

The February born shall find
Sincerity and peace of mind,
Freedom from passion and from care,
If they, the amethyst will wear.

By her who in March was born
No gem save Bloodstone shall be worn
They will ensure her constancy
True friendship and fidelity.

She who from April dates her years,
Diamonds shall wear,
lest bitter tears
For vain repentance flow.

Who first beholds the light of day
In spring's sweet, flower month of May
And wears an Emerald all her life
Shall be a loved and a loving wife.

By her who in June was born
No gem save Pearls shall be worn
They will ensure her constancy
True friendship and fidelity.

The gleaming Ruby should adorn,
All those who in July are born,
For thus they'll be exempt and free,
From lover's doubts and anxiety.

Wear a Peridot or for thee,
No conjugal fidelity,
The August born without this stone,
`Tis said, must live unloved; alone.

A maiden born when autumn leaves
Are rustling in September's breeze,
A Sapphire on her brow should bind;
To bring her joy and peace of mind.

October's child is born for woe,
And life's vicissitudes must know,
But lay an opal on her breast,
And hope will lull those woes to rest.

Who first comes to this world below
In dreary November's fog and snow,
Should prize the topaz amber hue,
Emblem of friends and lovers true.

If cold December gave you birth
The month of snow and ice and mirth
Place on your hand a turquoise blue;
Success will bless whate'er you do.

—Gregorian Birthstone Poems>

Learn about other birthstones

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