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Where the Tradition Actually Comes From
Birthstones did not begin as a birthday gift idea. The origin sits somewhere far older and considerably more ceremonial. The Book of Exodus describes Aaron’s breastplate — a sacred garment worn by the first high priest of the Israelites — set with twelve different gemstones, each representing one of the twelve tribes of Israel. Those twelve stones were said to possess great powers and the ability to tell people their fate.
The connection between those stones and the months of the year came later. The first-century historian Josephus made the link between the twelve stones in Aaron’s breastplate, the twelve months of the year, and the twelve signs of the zodiac — a three-way correspondence that gave the tradition its lasting structure. By the 8th and 9th centuries, people owned collections of all twelve stones but wore only a single stone each month, believing it carried heightened powers during its designated time. The practice of wearing one stone permanently — the one tied to your birth month — probably began in 16th-century Germany or Poland before spreading across Europe.
The tradition also has roots outside the Judeo-Christian world. The Ratna Pariksha, a 5th-century Hindu text, chronicles the relationships between gemstones and deities, celestial bodies, and days of the week. Hindu practices link nine gemstones to different celestial forces, known as navaratna in Sanskrit — a parallel system that likely influenced Western customs as East-West trade expanded.
Standardisation arrived in August 1912, when the National Association of Jewelers met in Kansas City and officially adopted a list. Britain’s National Association of Goldsmiths created its own standardised list in 1937. The list has been updated since — alexandrite was added to June in 1952, tanzanite to December in 2002, and spinel to August in 2016 — but the core structure has remained largely intact for over a century.
January Through June: The First Half of the Year
January — Garnet. The name comes from the Latin garanatus, meaning ‘seed-like’, a reference to the gem’s resemblance to the shining red seeds of a pomegranate. In Greek mythology, Hades gifted Persephone a pomegranate before a long journey, and the garnet became a symbol of passion and safe return. Historically, garnets were worn by travellers to guard against accidents and nightmares. Gemologically, garnet is not a single mineral but a group of related silicate minerals; the deep red variety most associated with January is almandine garnet, typically rating 6.5–7.5 on the Mohs hardness scale. Ears Decor’s garnet birthstone earrings are crafted in gold, silver, or platinum for anyone born in January.
February — Amethyst. The word comes from the Greek amethystos, meaning ‘sober’, because ancient Greeks believed the stone guarded against intoxication. Leonardo da Vinci reportedly claimed it had the power to increase intelligence. Amethyst Birthstone earrings is a variety of quartz coloured by iron impurities; its hue ranges from pale lavender to deep violet. At one time only royalty could wear it — it appears in the collections of royal families throughout Europe and Asia — which gave it lasting associations with personal empowerment and inner strength.
March — Aquamarine. Named for the Latin aqua marina (‘sea water’), this blue beryl was historically carried by sailors as a talisman against ocean dangers. Ancient lore held that aquamarine talismans etched with the likeness of Neptune offered protection at sea. Gemologically it belongs to the beryl family alongside emerald, with a hardness of 7.5–8 on the Mohs scale and a characteristic pale-to-medium blue caused by ferrous iron. Aquamarine birthstone earrings from Ears Decor are set in gold, silver, or platinum, making them a meaningful gift for March birthdays.
April — Diamond. In Sanskrit, the diamond is called vajra, meaning ‘lightning’, and in Hindu mythology it was the weapon of Indra, king of gods. Beyond its association with everlasting love, diamond was once thought to bring courage to its wearer. Gemologically it is the hardest natural substance at 10 on the Mohs scale, composed of pure carbon in a cubic crystal structure. Those born in April have the distinction of a birthstone that doubles as the most universally recognised symbol of commitment in fine jewellery.
May — Emerald. Emerald was reportedly one of Cleopatra’s favourite gems, and ancient Romans dedicated it to Venus, the goddess of love and beauty. It has long been associated with fertility, rebirth, and love — today it tends to signify wisdom, growth, and patience. Gemologically, emerald is a chromium- or vanadium-bearing variety of beryl; its rich green colour is caused by trace amounts of those elements. Most natural emeralds contain inclusions (known in the trade as jardin), which are considered part of the stone’s character rather than defects. In biblical texts, emerald is one of the twelve stones on the High Priest’s breastplate, associated with wisdom and spiritual protection.
June — Pearl, Moonstone, and Alexandrite. June is one of the rare months with three recognised birthstones. Pearl is the only birthstone not formed inside the earth — it is produced by a mollusc’s natural defence mechanism when an irritant enters the shell, which is then coated in nacre until a complete pearl forms. Ancient Greeks believed pearls were the hardened tears of joy from Aphrodite. Moonstone, formed from the feldspar minerals albite and orthoclase, displays a floating light effect called adularescence, and has been historically linked to love, balance, and intuition. Alexandrite, added to the official list in 1952, is celebrated for its remarkable colour-changing quality — appearing green in daylight and red under incandescent light — symbolising transformation and good fortune.
July Through December: The Second Half of the Year
July — Ruby. Ancient Hindus regarded the ruby as the ‘king of gems’, believing it protected its wearer from evil. Historically, rubies have adorned crowns and talismans and been associated with passion, power, and prosperity. Gemologically, ruby is the red variety of corundum (aluminium oxide), coloured by chromium; it rates 9 on the Mohs scale, making it one of the hardest coloured gemstones. The finest rubies, often described as ‘pigeon’s blood’ red, command some of the highest per-carat prices of any coloured stone in the world. Ruby birthstone earrings from Ears Decor are available in gold, silver, or platinum settings.
August — Peridot (and Spinel). Peridot is sometimes called the ‘evening emerald’ for its light olive-green colour. It was once believed that the green peridot crystals found in volcanic ash were the tears of the volcano goddess Pele, and when set in gold it was said to protect the wearer from nightmares. Gemologically, peridot is one of the few gemstones that forms in only one colour — the intensity of the green depends on the iron content. Spinel was added as a second August birthstone in 2016, reflecting the gem trade’s acknowledgement of a stone long mistaken for ruby throughout history.
September — Sapphire. Sapphire was once thought to guard against evil and poisoning, and it was traditionally a favourite stone of priests and kings. Its symbolism of purity and wisdom made it the stone of choice for religious leaders, and that association with loyalty and truth persists today. Gemologically, sapphire is the non-red variety of corundum — the same mineral species as ruby — and while blue is most familiar, sapphires also occur naturally in pink, yellow, padparadscha (salmon-orange), and colourless forms. The blue sapphire in Princess Diana’s engagement ring, now worn by Princess Catherine, probably did more for the stone’s cultural profile in the UK than any marketing campaign could. Sapphire birthstone earrings at Ears Decor are crafted in gold, silver, or platinum.
October — Opal and Tourmaline. The word opal comes from the Latin opalus, meaning ‘precious jewel’. Necklaces set with opals were worn to repel evil and protect eyesight. Opal’s defining characteristic is its play-of-colour — an internal diffraction of light caused by the arrangement of silica spheres within the stone — making each opal genuinely unique. Tourmaline, the alternative October stone, occurs in a broader colour range than almost any other gem and represents compassion and emotional balance.
November — Topaz and Citrine. During the Renaissance, people believed topaz could break or quell anger; in Hindu belief it is considered sacred. Topaz in its pure form is actually colourless — the familiar yellow-orange ‘Imperial Topaz’ gets its colour from chromium impurities. Citrine, a yellow variety of quartz, was added as an alternative November stone in 1952 and is associated with warmth, joy, and clarity of thought. Both stones sit at 7–8 on the Mohs scale and work well in earring settings.
December — Tanzanite, Turquoise, and Zircon. December has three official birthstones, each with a distinct character. Tanzanite, added to the list in 2002, is found exclusively near Mount Kilimanjaro in Tanzania, making it geologically rare — estimated to be about a thousand times rarer than diamond by some in the trade. Its vivid blue-violet colour symbolises transformation and new beginnings. Turquoise is one of the oldest known gemstones, used by Egyptians over 6,000 years ago, and has long been valued as a stone of protection and good fortune. Zircon, one of the oldest minerals on Earth, radiates natural brilliance and represents wisdom and prosperity. Tanzanite birthstone earrings from Ears Decor capture the stone’s striking violet-blue tones in gold, silver, or platinum.
Why Earrings Are the Preferred Birthstone Format
Birthstone jewellery appears in rings, necklaces, and bracelets, but earrings occupy a particular position in the format. They are visible without requiring the wearer to gesture or extend a hand — the stone sits at face level, close to the light, where colour reads most clearly. For chromatic gemstones like sapphire, ruby, or emerald, that proximity to natural light makes a practical difference in how the stone performs.
There is also a practical durability argument. Earring settings expose gemstones to far less mechanical stress than rings, which contact surfaces constantly. Stones like opal (5.5–6.5 on the Mohs scale) or tanzanite (6–7, with perfect cleavage) are often better suited to earrings than to rings for everyday wear. Studs and halo settings in particular hold the stone securely while allowing maximum light return.
For anyone choosing a birthstone gift in 2026, the format question matters as much as the stone itself. A stud earring in a four-claw setting will show the colour of a sapphire or emerald cleanly; a bezel setting offers more protection for softer stones; a halo of small diamonds around the centre stone intensifies the apparent size and brilliance of the birthstone. Ears Decor offers custom design options across all these configurations, allowing the metal, setting style, and stone size to be tailored to the specific gemstone and the wearer’s preference — which is worth considering when the stone in question has particular hardness or cleavage properties that affect how it should be set.