Jewelry
Birthstones: A Month-by-Month Guide to Their Meaning and History
June 17, 2026
From an ancient priest's breastplate to the modern list we know today, here's the story behind birthstones, what each month's stone means, and how to choose one you'll love wearing.
Few pieces of jewelry feel as personal as a birthstone. It's a little badge of the month you were born and a thoughtful way to carry a loved one close, and the tradition is far older and more interesting than most people realize. Whether you're curious about your own stone or shopping for someone special, here's a warm, plain-language guide to where birthstones came from, what each month's stone means, and how to pick one you'll enjoy wearing.
Where Birthstones Came From
The story usually begins in the Hebrew Bible, with the Breastplate of Aaron described in the Book of Exodus. Aaron, the first high priest of the Israelites, wore a ceremonial breastplate set with twelve gemstones arranged in four rows of three, each stone standing for one of the twelve tribes of Israel. It's a striking image, though it's worth knowing that the exact identity of those twelve stones is genuinely uncertain: ancient gem names don't map neatly onto modern mineralogy, and translations disagree. So when you see a precise list of breastplate stones, it's best read as one interpretation among several.
The leap from twelve tribal stones to twelve months came later. The first-century historian Josephus is credited with connecting the breastplate's twelve stones to the twelve months and the twelve signs of the zodiac, and the early Christian scholar St. Jerome later encouraged people to take up the tradition. For centuries, though, the custom wasn't to wear one stone for your birth month; people aimed to own all twelve and wear them together. Wearing a single stone tied to your birth month developed gradually, with sources placing its rise anywhere from the 8th–9th centuries to the 16th–18th centuries, so the tradition likely traces back to that broad window rather than any one tidy date.
Here's the part that surprises people most: the familiar one-stone-per-month list is essentially a 20th-century American creation. In 1912, the national jewelers' association (today known as Jewelers of America) adopted a standardized list so jewelers everywhere could stock and promote the same stones. It has changed only a handful of times since: four stones were added in 1952 (alexandrite for June, citrine for November, tourmaline for October, zircon for December), tanzanite joined December in 2002, and spinel was added to August in 2016. So the concept is ancient, but the modern list is a living, evolving standard, not a fixed mandate handed down through the ages.
A quick note for completeness: other traditions exist too, including older "traditional" stones that differ from the modern picks, the planetary Navaratna system of Vedic astrology, and a separate "mystical" list of Tibetan origin. The guide below centers on the modern Western, month-based list most people in the U.S. know.
The Month-by-Month Rundown
January — Garnet
Best known in deep, rich red, garnet is actually a whole mineral family that shows up in nearly every color, from vivid orange to green to purple. It symbolizes protection, vitality, and friendship. Its name comes from the Latin granatus, meaning "seed-like," a nod to the glistening red seeds of a pomegranate.
February — Amethyst
This purple variety of quartz ranges from pale lilac to deep violet, and it's long been linked to clarity, calm, and balance. The Greek word amethystos means "not intoxicated," because ancient wearers believed it could ward off drunkenness. Once as prized as ruby and emerald, it became more affordable after large Brazilian deposits were discovered.
March — Aquamarine & Bloodstone
Aquamarine is a light blue to blue-green beryl whose name means "sea water," and sailors once carried it for safe voyages; it speaks to tranquility, youth, and hope. The traditional stone, bloodstone, is a deep green chalcedony flecked with red and is associated with courage and strength.
April — Diamond
Classically colorless but found in "fancy" hues like yellow, pink, and blue, the diamond stands for everlasting love, strength, and purity. Its Greek root adamas means "unconquerable," which suits the hardest known natural material on Earth. Famous examples include the deep-blue Hope Diamond and the enormous Cullinan, cut into stones now in the British Crown Jewels.
May — Emerald
The green-to-bluish-green member of the beryl family, emerald has always evoked rebirth, renewal, and the freshness of spring. Most emeralds carry tiny internal inclusions jewelers poetically call the jardin, or "garden." Colombia produces some of the world's finest, and the stone is forever tied to Cleopatra.
June — Pearl, Alexandrite & Moonstone
June is generous, with three stones to choose from. Pearls (white, cream, gray, even black) are the only gem made by a living creature and symbolize purity and wisdom. Alexandrite is famous for changing color, green in daylight, red under lamplight, and was named for Tsar Alexander II after its discovery in Russia's Ural Mountains. Moonstone, with its soft floating glow, is linked to intuition and new beginnings.
July — Ruby
The red variety of corundum, ruby ranges from pinkish-red to a deep "pigeon's blood" crimson and has long been called the "king of gems," a symbol of passion, courage, and protection. Fun fact: ruby and sapphire are the same mineral. Red corundum is ruby; every other color is sapphire.
August — Peridot, Spinel & Sardonyx
Peridot is gem-quality olivine in a cheerful yellow-green, and some of it has literally arrived on Earth inside meteorites. Spinel, added in 2016, comes in many colors and was so often mistaken for ruby that several famous "rubies" in royal collections, like the Black Prince's Ruby, are actually spinels. Sardonyx, the traditional stone, is banded reddish-brown and white. Together they speak to strength, energy, and stability.
September — Sapphire
Beloved in classic deep blue, sapphire also appears in pink, yellow, green, and more (only the red version gets renamed ruby). It represents wisdom, loyalty, and sincerity, and it's extremely durable. Its royal reputation got a modern boost from the blue sapphire engagement ring of Princess Diana, now worn by Catherine, Princess of Wales.
October — Opal & Tourmaline
Opal is prized for its shifting "play-of-color," flashes of rainbow that dance across the stone; it's tied to creativity and inspiration, and Australia is its dominant source. Tourmaline, added in 1952, boasts one of the widest color ranges of any gem, including the charming "watermelon" variety with a pink core and green rim. Both are linked to balance and healing.
November — Topaz & Citrine
Citrine glows in warm yellow to golden-amber tones and has earned nicknames like "the merchant's stone" for its links to joy and abundance. Topaz ranges from colorless to golden to blue, with the orange-pink "imperial topaz" the most prized. A heads-up: much commercial citrine is actually heat-treated amethyst, and most blue topaz on the market began as colorless topaz.
December — Turquoise, Tanzanite, Zircon & Blue Topaz
December offers a cool-toned bounty. Turquoise, one of humanity's oldest gems, ranges from robin's-egg blue to green and signals protection and good fortune. Tanzanite, a violet-blue stone discovered in the 1960s, is found in just one place on Earth, near Mount Kilimanjaro in Tanzania. Zircon (a natural mineral, and not to be confused with synthetic cubic zirconia) brings brilliant fire, while blue topaz offers a clean, calming sparkle.
Choosing and Wearing Your Birthstone
The wonderful thing about birthstones is that there are no binding rules. Most people start with their own birth month, but plenty choose a stone for the people they love. A partner's, child's, or parent's birthstone makes a heartfelt gift, and "mother's" or family pieces, which combine the birthstones of several relatives in one ring or pendant, are a perennial favorite for moms and grandmothers. Birthdays, Mother's Day, anniversaries, graduations, and new-baby gifts are all natural occasions.
Because many months offer more than one stone, you can simply pick the color you love best. If you're torn between, say, a modern and a traditional option, go with the one that makes you smile.
One practical thing worth knowing is durability. Gemstones are rated on the Mohs hardness scale from 1 to 10, and harder stones hold up better to daily wear, especially in rings, which take the most knocks. Diamond, sapphire, and ruby are wonderfully tough and shrug off everyday life. Softer or more delicate stones, including pearl, opal, and turquoise, scratch more easily, so they often shine brightest as pendants, earrings, or occasional-wear pieces rather than everyday rings. A few stones (emerald and tanzanite among them) are reasonably hard but can chip, so they appreciate a protective setting. None of this should scare you off a stone you love; it just helps you care for it well.
If you'd like to see birthstones in person, comparing colors and cuts in real light tells you far more than any photo can. A local Omaha jeweler like Millard Jewelry & Coin can help you compare them side by side and find the piece that feels right, whether it's for your own month or someone you're shopping for. Either way, your birthstone is a small, lasting way to celebrate who you are and the people you carry with you.