Zodiac Birthstones by Month: Signs, Stones and Dates

Zodiac birthstones by month can feel confusing at first, because two lists hide inside the idea: one ties a gem to your calendar month, and the other ties a gem to your sun sign, which changes around the 20th of each month rather than on the 1st. This guide sets both side by side, so you can see which stones belong to your birthday, where those pairings came from, and how people wear, carry and look after them.

Are Birthstones by Month or by Zodiac Sign?

Both, and that is the root of most mix-ups. The monthly list is the one jewellers use when they sell a “birthstone ring”. It follows the calendar: everyone born in July shares ruby, everyone born in September shares sapphire. That list was formally standardised in the United States in 1912 and has been revised several times since.

Zodiac stones follow your sun sign instead. In Western astrology, your sun sign is the sign of the zodiac the sun appeared to be passing through when you were born. Because each sign begins around the 20th, every calendar month is shared by two signs. That is where a chart of zodiac birthstones by month earns its keep: it shows which two stones meet inside each month, and how they line up against the standard monthly gem.

Neither system is more correct than the other. They grew from the same old roots and drifted apart over the centuries. Many people treat their monthly stone as the public, easy-to-gift gem and their zodiac stone as the more personal one, kept in a pocket, on a bedside table or worn close to the skin.

Zodiac Birthstones by Month: The Full Chart

Read across from your birth month. The zodiac column uses one long-standing set of zodiac birthstones by month drawn from older gem lore, with the sign dates of the tropical zodiac (the version used in most Western horoscopes). The final column follows the current American list of monthly birthstones.

Look at the chart for a moment and a pattern appears. The zodiac stones run roughly a month behind the calendar list: garnet is January’s birthstone and the stone of Aquarius, which starts in late January; amethyst belongs to February and to Pisces, which starts in late February; bloodstone sits with March and with Aries. Both lists share a common ancestry, and the zodiac version simply kept older pairings that the monthly list later swapped out.

Be aware that charts of zodiac birthstones by month vary from one jeweller or astrologer to the next. You may see Gemini given pearl, Cancer given ruby, or each sign assigned three or four stones at once. Treat any chart, including this one, as one tradition among several. The journal explains its general approach to these traditions on the editorial page.

For a closer look at single months, there are longer pieces on January’s garnet, February’s amethyst, April’s diamond and rock crystal, May’s emerald, agate and chrysoprase, June’s pearl, moonstone and alexandrite, July’s ruby, carnelian and onyx, August’s peridot, spinel and sardonyx and September’s sapphire and lapis. If colour is what draws you, the birthstone colour chart groups every month by hue.

The Twelve Zodiac Stones, Sign by Sign

Here is what each stone looks like, what crystal traditions say about it, and how people tend to use it. The meanings below are beliefs and folklore that many collectors find meaningful, not proven effects. Where a stone also appears on the monthly lists, that overlap is noted, because it is one of the most useful things to know about zodiac birthstones by month.

Aries (21 March to 19 April): Bloodstone

Bloodstone is a deep green stone flecked with red spots, which is how it earned its name. In crystal traditions it is linked with courage and stamina, a natural fit for a sign known for charging ahead. People often carry it tumbled, meaning smoothed and polished in a rotating barrel until it feels like a river pebble. It is also a March birthstone, so an Aries born in late March gets one stone for both lists.

Taurus (20 April to 20 May): Sapphire

Sapphire is best known in deep blue, though it occurs in other colours too. It is traditionally associated with wisdom, loyalty and steadiness, qualities that suit a patient earth sign. Sapphire is a very hard gem, so it is a practical choice for a ring worn every day. It is also September’s modern birthstone.

Gemini (21 May to 20 June): Agate

Agate is a banded member of the quartz family, its layers ranging from soft greys and blues to rich browns and reds. Folklore links it with balance and steady communication, a pleasing match for the sign of the twins. Polished slices and tumbled pieces make good desk or pocket stones. You can read about agate’s relatives in the Quartz & family collection, and agate was also one of May’s older birthstones.

Cancer (21 June to 22 July): Emerald

Emerald is the green variety of the mineral beryl and the modern May birthstone. In crystal traditions it stands for love, renewal and loyalty, which many Cancer natives feel suits their home-loving reputation. Many emeralds contain natural inclusions (tiny internal features), so they are worn and cleaned gently. Pendants and earrings keep them away from knocks.

Leo (23 July to 22 August): Onyx

Onyx is usually seen as polished black or in black-and-white bands, and it belongs to the quartz family. Traditions associate it with strength, protection and self-control, a grounding counterweight to Leo’s bright energy. It is popular as beads, palm stones and carved pieces. Its banded cousin sardonyx is one of August’s monthly birthstones.

Virgo (23 August to 22 September): Carnelian

Carnelian is a translucent orange to red-brown stone in the quartz family. It is believed in crystal traditions to support motivation and creative warmth, and many people keep a piece on a work desk as a small cheerful reminder. Britain’s list also names carnelian as an alternative July birthstone.

Libra (23 September to 22 October): Chrysolite

Chrysolite is an old gem name used for yellow-green stones, and most modern readers take it to mean peridot, August’s birthstone. It is linked with balance and clarity, fitting the sign of the scales. Older European lists also gave chrysolite to September, so it has a long history around the turn of autumn.

Scorpio (23 October to 21 November): Beryl

Beryl is a mineral family rather than a single look: emerald and aquamarine are both beryl. In crystal traditions beryl is tied to insight and honesty, suiting a sign with a reputation for depth. Many Scorpios choose sea-blue aquamarine, March’s modern birthstone, as their beryl.

Sagittarius (22 November to 21 December): Topaz

Topaz comes in many colours, from golden to blue to colourless, and it is one of November’s birthstones. Folklore links it with warmth, generosity and optimism, qualities often credited to the adventurous archer. Faceted topaz is a classic choice for rings and pendants.

Capricorn (22 December to 19 January): Ruby

Ruby is the red member of the same mineral family as sapphire, and it is July’s birthstone. In crystal traditions it represents vitality, devotion and ambition, a good match for Capricorn’s steady climb. Like sapphire, it is hard enough for everyday rings.

Aquarius (20 January to 18 February): Garnet

Garnet is most familiar as a deep wine red, though it also occurs in greens, oranges and other shades. It is January’s birthstone and is traditionally linked with commitment, friendship and steadiness. Garnet beads and small faceted stones are common in bracelets and earrings.

Pisces (19 February to 20 March): Amethyst

Amethyst is purple quartz and February’s birthstone. Many people use it for calm and intuition, often holding a piece during meditation or keeping a raw cluster (a group of crystals still joined to their base rock) on a bedside table as part of an evening wind-down. It is one of the easiest zodiac stones to find in many forms. For a broader view of these and other stones, browse the guide to crystal types and their meanings or the full crystal library.

Once you know which stone belongs to your sign, you may want to hold one rather than only read about it. Spirit Magicka is the journal’s own crystal shop.

Where Zodiac and Monthly Birthstones Came From

The idea behind zodiac birthstones by month is older than either modern list. In the first century, the historian Josephus connected the twelve stones set in the breastplate of Aaron, described in the Book of Exodus, with the twelve months and the twelve signs of the zodiac. Translations of that passage have varied a great deal, and Josephus himself gave two different versions of the stones, which helps explain why lists never quite agree.

Early Christian writers later linked the twelve foundation stones of the New Jerusalem, from the Book of Revelation, with the apostles. Over time a custom grew of owning all twelve stones and wearing a different one each month. The habit of wearing a single stone for your own birth period is only a few centuries old, and gem historians disagree on its start: some place it in eighteenth-century Poland, others in Germany in the 1560s.

How the monthly list was fixed

• 1870: rhyming poems of unknown authorship, pairing each month with a gem, were printed in a jeweller’s pamphlet and helped popularise the English-language stones.
• 1912: an American jewellers’ association met in Kansas City and adopted an official list to standardise birthstones.
• 1952: the list was updated, adding alexandrite for June, citrine for November and pink tourmaline for October, replacing December’s lapis lazuli with zircon and swapping March’s main and alternative stones.
• 2002: tanzanite was added for December.
• 2016: spinel joined August.

Britain created its own standard list in 1937, and Japan’s industry associations added ten new birthstones in 2021, so a reader in London or Tokyo may meet a slightly different chart. The zodiac list, by contrast, was never formally standardised, which is why charts of zodiac birthstones by month disagree more than monthly charts do.

Other traditions worth knowing

Hindu astrology takes a different route entirely. Rather than tying a gem to a month, it links stones to celestial bodies through the Navaratna, or “nine gems”, connected to the Sun, Moon and planets. A birth chart is drawn up, and specific stones are recommended on that basis. There is also a separate set of day-of-the-week stones, so someone born on a Monday is linked with pearl and crystal, and someone born on a Thursday with sapphire and carnelian. For more on how gems first take shape in the earth, see how crystals are formed.

How to Choose Between Your Zodiac Stone and Your Birthstone

Most people end up with two or three candidate stones. Here is a simple way to settle on one, or to decide to keep more than one.

1. Confirm your sun sign. Use the dates in the chart, but if your birthday falls within a day of a changeover, check the exact date for your birth year, because the sun enters each sign on slightly different days from year to year.
2. List your stones. Write down your zodiac stone, your modern monthly stone and any traditional alternative for your month.
3. Think about use. A ring worn daily needs a tough gem. A pendant, a pocket stone or a piece kept at home can be softer.
4. Read the meanings. Pick the stone whose traditional associations speak to you right now, whether that is courage, calm, warmth or steadiness.
5. Look at colour. Many people simply choose the colour they will enjoy seeing every day. The birthstone colours and alternates chart can help.

A worked example: born on 5 March

Someone born on 5 March is a Pisces, so the zodiac stone is amethyst. The modern monthly stones are aquamarine and bloodstone. That gives three choices: amethyst for its calm, reflective associations; aquamarine for its clear sea-blue colour; and bloodstone, which also happens to be the stone of Aries, the sign that begins later that month. A practical answer might be an aquamarine pendant for everyday wear and a tumbled amethyst kept by the bed for quiet evenings.

A second example: born on 20 August

A 20 August birthday falls in Leo, whose stone is onyx. August offers peridot, spinel and sardonyx. Onyx and sardonyx are closely related banded stones, so a sardonyx piece neatly covers both the zodiac and the monthly lists, a pleasing overlap that a quick look at zodiac birthstones by month makes easy to spot.

Wearing, Carrying and Caring for Your Birthstones

The stones on any list of zodiac birthstones by month differ widely in how much wear they can take. Gem durability is often described with the Mohs hardness scale, a simple ranking from 1 (softest) to 10 (hardest) based on which minerals can scratch which. Diamond sits at the top; you can read how it compares in this piece on diamond’s place on the Mohs scale, and collectors who want to test their own pieces can learn about a Mohs hardness test kit.

Ways people use their stones

• Jewelry: rings for tough gems such as sapphire, ruby and diamond; pendants and earrings for gentler ones such as pearl, opal and emerald.
• Carrying: a tumbled stone in a pocket or bag, held now and then as a small personal reminder.
• Meditation: holding the stone in the palm or resting it nearby during a few quiet minutes of breathing, a ritual many people find steadying.
• Placement at home: a raw piece or cluster on a desk, shelf or bedside table, or a small set of zodiac stones arranged together as a birthday display.

Raw stones are left in their natural, unpolished state, while tumbled stones are smoothed. Raw pieces show more of the crystal’s natural form but can have sharp edges and fragile points, so they suit display better than pockets. If you are starting a small collection of your own, Spirit Magicka is the journal’s own crystal shop.

Everyday care

• Wipe stones and jewelry with a soft, dry cloth after wearing to remove skin oils.
• Store pieces separately, in pouches or a lined box, so harder gems do not scratch softer ones.
• Put jewelry on after perfume, lotion and hairspray, and take it off for cleaning, swimming and gardening.
• Avoid soaking porous or delicate stones such as pearl, opal and turquoise, and skip salt-water cleansing for anything you are unsure about. Some minerals are softened or damaged by water; the guide to dry care for selenite shows how to treat a water-sensitive stone.
• Keep coloured stones out of strong, direct sun for long periods as a simple precaution against fading.

A note on safety: do not make crystal elixirs (stones soaked in drinking water) unless you are certain the mineral is safe, and keep small tumbled stones away from young children and pets, who may swallow them. Birthstones are lovely personal symbols, but they are not a replacement for medical or mental-health care.

Common Mistakes With Zodiac Birthstones

A few slip-ups come up again and again when people first start working with zodiac birthstones by month.

• Assuming signs start on the 1st. Someone born on 10 April is an Aries, not a Taurus. Always go by the sign dates, not the month name.
• Treating one chart as the only truth. Zodiac lists vary widely. If another source gives your sign a different stone, both reflect real traditions.
• Choosing a delicate gem for a daily ring. Pearl and opal are beautiful, but they suit pendants and earrings better than hands that wash dishes and carry bags.
• Confusing old and new names. Chrysolite, sardonyx and beryl all appear on older lists under names a modern jeweller may describe differently, as peridot, banded onyx or aquamarine.
• Cleaning everything the same way. A method that suits a hard sapphire can damage a pearl or turquoise. Check the stone before soaking or scrubbing it.
• Expecting a stone to do the work. In crystal traditions a birthstone is a symbol and a reminder. Its value lies in what it means to you.

The simplest approach is often the happiest one: find your sun sign, note your monthly stone, and choose the piece you will enjoy looking at. Whether that is the stone a chart of zodiac birthstones by month points to, the gem on the jeweller’s calendar or both at once, it becomes yours through wearing it. To explore the stones beyond your own birthday, the Earth treasures collection and the Moon & light collection are good places to keep reading, and the month-by-month birthstone history fills in the story behind every calendar gem.