This list was compiled by Bishop Isidore of Seville in 619 A.D. It remains the oldest complete set of western birthstones known to exist. It is quite obviously based on the stones listed as the foundation stones of Jerusalem, as described in the Christian religious text the Book of Revelations.

January

Garnet
February

Amethyst
March

Jasper
April

Sapphire
May

Agate
June

Emerald

July

Onyx
August

Carnelian
September

Peridot
October

Beryl
November

Topaz
December

Ruby





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