True Birthstones by Month: Modern, Traditional and History

The question of true birthstones by month sounds as though it should have one tidy answer, a single gem printed beside each month like a date on a calendar. In practice there are several overlapping lists: a modern chart agreed by American jewellers in the early twentieth century, older traditional lists that reach back through medieval Europe, and mystical and zodiac lists that follow their own logic. Knowing how they fit together lets you choose with confidence, and often with more freedom than a single shop chart suggests.

What does “true birthstone” actually mean?

When people talk about a “true” birthstone, they usually mean one of three things. Some mean the stone on the modern list, the one most jewellers will hand you if you ask for a January or a September gem. Others mean the traditional stone, the older choice that appeared in European custom before the modern chart existed. A smaller group means the stone tied to their zodiac sign, which follows the dates of the sun signs rather than the calendar months.

None of these is more scientifically correct than another. A birthstone is a cultural tradition, not a property of a mineral, so the true birthstones by month are really whichever tradition you choose to follow. That is why this journal treats birthstone meanings the way it treats all crystal lore: as beliefs and stories worth knowing, held alongside the real geology of the stones. You can read more about that approach on our editorial page.

What makes the modern list feel official is simply that it was written down and widely adopted by a trade body. The traditional stones were never formally voted on; they grew out of centuries of use. Both have a fair claim to the word “true”.

True birthstones by month: the modern and traditional chart

The table below sets out the true birthstones by month as they are most commonly listed today, with the older or alternative stones beside them. Lists vary a little between countries and sources, so treat the traditional column as the most frequently cited options rather than a closed set.

If you want the same information arranged by shade rather than by month, our guide to colours for birthstones by month groups the stones that way, and the birthstones chart by month gives a printable overview.

Where the birthstone lists came from

The idea of twelve meaningful stones is very old. The Book of Exodus describes a breastplate worn by the high priest, set with twelve gems in four rows, one for each of the tribes of Israel. Later writers linked those twelve stones to the twelve months and the twelve signs of the zodiac, and over time the notion grew that a person might wear the stone of their own month.

The ancient names do not map neatly onto modern mineralogy. In old texts, gems were often named by colour rather than by what they were made of, so a single word could cover several different red or green stones. Many historians think, for example, that some stones once called “sapphire” were actually what we now call lapis lazuli. This is one reason the traditional lists differ from source to source: translators made different guesses.

By the eighteenth century, wearing a birth month stone had become a fashionable custom in parts of Europe. The version most people use now came later. In 1912 an association of American jewellers met and published a standard list so that shops would sell the same stone for each month. That list has been revised several times since. Alexandrite, citrine, zircon and pink tourmaline were added in the middle of the century, tanzanite joined December in 2002, and spinel was added to August in 2016.

So when someone insists their stone is the “real” one, they are usually comparing the 1912 chart, with its later additions, against the older European tradition. Both are part of the same long story.

Birthstones month by month: stones, meanings and lore

Here is a closer look at each month: what the stone looks like, a little of its background, and the meanings people traditionally attach to it. Our library on every crystal has fuller articles on many of these stones.

January: garnet

Garnet is best known as a deep wine-red stone, though the garnet family also includes greens, oranges and pinks. In crystal traditions it is linked with loyalty, steady energy and safe travel, and it was once carried as a protective charm on long journeys. Our article on January’s garnet covers its colours and lore in depth.

February: amethyst

Amethyst is the purple member of the quartz family, ranging from pale lilac to a deep violet. Its traditional symbolism centres on piety, humility, spiritual wisdom and sincerity, which suits a month whose Latin name comes from a word for purification. Many people keep a tumbled amethyst (a small stone smoothed by rolling it in a barrel with grit) beside the bed as part of a calming evening ritual. See the quartz family collection for related stones.

March: aquamarine and bloodstone

March holds the sharpest contrast on the chart. Aquamarine is a clear, pale sea-blue gem, associated in folklore with sailors, calm water and clear communication. Bloodstone, the older choice, is an opaque dark green stone with red flecks, long linked with courage and vitality. People who find aquamarine too delicate in colour often love the earthy weight of bloodstone.

April: diamond and rock crystal

Diamond is the hardest natural material on the Mohs scale, the ten-step scale that ranks minerals by how easily they scratch one another. It is traditionally associated with enduring love and strength. Rock crystal, clear quartz, is the gentler traditional alternative, valued in crystal traditions as a stone of clarity. Read more in our piece on April’s diamond and rock crystal, and on how quartz rates for hardness.

May: emerald, agate and chrysoprase

Emerald is a rich green gem long tied to spring, renewal and faithful love. It often contains tiny natural inclusions, which gem lovers sometimes call its “garden”. Agate, banded and endlessly varied, and chrysoprase, an apple-green stone, are the traditional alternatives, both believed to bring balance and steadiness.

June: pearl, moonstone and alexandrite

June offers three very different choices. Pearl is an organic gem formed inside a mollusc, symbolising purity and calm. Moonstone shows a soft floating sheen and is linked with intuition and the moon in many traditions; you will find it in our Moon and light collection. Alexandrite is famous for shifting colour between daylight and lamplight. Our guide to June’s pearl, moonstone and alexandrite compares them side by side.

July: ruby, carnelian and onyx

Ruby is the red variety of corundum, the same mineral as sapphire, and it carries associations of passion, protection and vitality. Carnelian, an orange-red quartz, is believed to encourage courage and motivation, while black onyx is often used as a grounding stone. See July’s ruby, carnelian and onyx and our note on ruby’s hardness and toughness.

August: peridot, spinel and sardonyx

Peridot is a bright lime to olive green, linked in folklore with warding off darkness and bringing good fortune. Spinel, the newest addition, appears in reds, pinks and blues. Sardonyx, banded in reddish brown and white, is the old Roman choice for courage and strong relationships. Our August birthstones article and the guide to peridot’s hardness go further.

September: sapphire and lapis lazuli

Sapphire is best known in deep blue, though it comes in almost every colour except red. Traditionally it stands for wisdom, loyalty and truth. Lapis lazuli, the older stone, is an opaque royal blue rock often flecked with gold-coloured specks, prized in the ancient world and linked with insight. Read about both in September’s sapphire and lapis.

October: opal and tourmaline

Opal is loved for its play of colour, the flashes of rainbow light that move as you tilt it. In folklore it is linked with hope and imagination. Tourmaline comes in a huge range of colours, with pink especially associated with October and with gentle love. Our October birthstones guide and the note on opal’s hardness explain why opal needs extra care.

November: topaz and citrine

Golden topaz is the classic November stone, associated with strength and warmth. Citrine, a yellow to amber quartz, was added in the mid-century revision and is widely believed in crystal traditions to attract optimism and abundance, which is why it is sometimes called the merchant’s stone.

December: turquoise, tanzanite and zircon

December leans blue. Turquoise, an opaque sky-blue to green stone, is one of the oldest protective amulets in the world. Tanzanite is a violet-blue gem added in 2002, and blue zircon has a lively brilliance. Lapis lazuli appears on some older December lists too. Many of these stones live in our Earth treasures collection.

How to choose your own true birthstone

Because there is no single authority on the true birthstones by month, choosing yours is a personal decision. These steps help keep it simple.

1. Start with your month’s modern and traditional options. Look at both columns in the chart above. Many months offer a precious gem and a humbler, more affordable alternative.
2. Decide how you will use it. A ring worn every day needs a durable stone. A pendant, earrings or a stone kept on a shelf can be softer.
3. Look at colour. You will look at it often, so pick the shade you genuinely enjoy.
4. Read the lore. If one stone’s traditional meaning resonates more, that is a perfectly good reason to choose it.
5. Choose the form. Faceted gems suit jewelry. Raw stones (left in their natural, uncut state) and tumbled stones suit meditation, carrying in a pocket or placing on a desk or windowsill.
6. Consider a zodiac stone as well. Our guide to zodiac birthstones by month lists the stones for each sign.

A worked example

Imagine someone born in mid-August who wants a ring they can wear daily and a stone to keep on their desk. The modern options are peridot and spinel; the traditional option is sardonyx. Peridot’s bright green is cheerful, but it is softer than spinel, so for a ring worn while gardening or typing all day, spinel is the more forgiving choice. For the desk, a tumbled sardonyx works beautifully: its banded colours are calming to look at, and its old association with courage suits a working space. One month, two stones, each matched to how it will actually be used. That is the practical way to approach the true birthstones by month.

If you would like a raw or tumbled stone for a desk or meditation corner, Spirit Magicka, this journal’s own crystal shop, is one place to start looking.

Caring for birthstone jewelry and crystals

The twelve months span gems that are very hard and gems that are quite soft, so care varies a great deal from one stone to another. A few principles cover most of them.

• Store stones separately. Harder gems such as diamond, sapphire and ruby can scratch softer ones. Small fabric pouches or a divided jewelry box prevent this.
• Treat pearls, opal and turquoise gently. These are softer or more porous than most birthstones. Put them on after perfume, hairspray and lotion, wipe them with a soft dry or slightly damp cloth, and avoid soaking them.
• Keep opal away from sudden heat or drying conditions. Rapid temperature changes can stress it.
• Use mild soap and water only for durable gems. Harder stones like sapphire, ruby and garnet usually tolerate a soft brush and lukewarm soapy water. Check each stone before trying this.
• Avoid harsh cleaners. Household chemicals and ultrasonic cleaners can damage softer, treated or included stones.

A note on safety: do not place stones in drinking water to make crystal “elixirs”. Some minerals are fragile, porous or can contain substances you should not ingest, and it is not worth the risk. Small tumbled stones are also a choking hazard, so keep them out of reach of young children and pets.

Many people also enjoy energetic cleansing rituals, such as resting a stone in moonlight or passing it through incense smoke. In crystal traditions these are believed to refresh a stone’s energy, and they have the practical advantage of being gentle on delicate gems. Our article on crystals and their meanings covers more of these customs.

Common mistakes with birthstone charts

A few misunderstandings come up again and again when people work through the true birthstones by month.

• Assuming one list is the only correct one. The modern and traditional charts are both legitimate; pick the one that suits you.
• Mixing up month stones and zodiac stones. Zodiac signs straddle two months, so a late-February birthday might point to amethyst on the monthly list and a different stone on a zodiac list.
• Choosing a soft stone for hard wear. Pearl and opal are lovely in a ring but need care; a pendant may serve you better.
• Treating meaning as a guarantee. Traditional meanings are symbolic. A stone can be a meaningful reminder or a comforting part of a ritual, but it is not a substitute for medical or mental-health care.
• Forgetting the Southern Hemisphere. Seasonal symbolism shifts below the equator, where February falls in late summer rather than winter. Some people there prefer stones that match their season, which is a perfectly reasonable personal twist on the custom.
• Assuming price equals value. Garnet, amethyst and citrine are affordable, yet they carry centuries of lore as rich as any precious gem.

In the end, the most useful way to think about true birthstones by month is as a family of traditions rather than a rulebook. Look at your month’s modern stone, its traditional alternative and your zodiac stone, then choose the one whose colour, story and durability fit your life. For a broader overview, see our pieces on what the birthstones by month are and birthstones by each month, and when you are ready to hold one in your hand, you can browse Spirit Magicka.