Birthstone Guide by Month: Meanings, History & the Perfect Jewelry for Every Stone
Your birthstone is the gemstone assigned to the month you were born. Each month carries one or more stones linked to centuries of healing traditions, astrological lore, and cultural symbolism. This guide covers all 12 months in detail, explains where multiple stone options exist and why, and walks through the practical factors that matter most when choosing birthstone jewelry.
Jump to your month
Birthstone jewelry carries a specificity that most other pieces do not. A birthstone ring or pendant is tied to one person, one month, one set of associations that belong to them in particular. That specificity is what makes it feel meaningful rather than generic, which is why birthstone pieces consistently rank among the most personal gift choices in fine jewelry.
The tradition of wearing a gemstone corresponding to your birth month has roots going back to biblical times and has evolved through centuries of cultural interpretation. The modern standardized list used by jewelers in the United States was established in 1912 by the American National Retail Jewelers Association and has been updated several times since. Some months retain traditional stones that predate that list, which is why June, August, October, November, and December each offer two or three recognized options.
What This Guide Covers
This guide walks through every month from January to December with sections covering the primary birthstone, its color and origin, historical symbolism, hardness and wearability, and what to look for when buying. A quick-reference table summarizes all 12 months at a glance. The final sections address months with multiple stone options and the practical factors that matter most when selecting birthstone jewelry for yourself or as a gift.
How Birthstones Got Their Months
The concept of birthstones traces to the Book of Exodus, which describes a breastplate worn by the High Priest Aaron bearing 12 gemstones representing the 12 tribes of Israel. First-century historian Josephus and later St. Jerome connected those 12 stones to the 12 months of the year. Early practice involved owning a full set of all 12 stones and rotating which stone was worn each month. The more familiar modern practice of wearing only the stone of your birth month became common centuries later.
The 1912 standardized list was driven partly by commercial considerations, as jewelers sought to assign accessible stones to months that had previously been linked to rare or expensive gems. Subsequent additions reflect ongoing updates by the Jewelers of America and the American Gem Trade Association. Tanzanite joined the December list in 2002. Spinel was added to August in 2016. The list continues to evolve as the industry adapts to gemstone availability and consumer demand.
"The sheen and coloration of precious stones are the same today as they were thousands of years ago and will be for thousands of years to come. In a world of change, this permanence has a charm of its own that was early appreciated."
George Frederick Kunz
Chief Gemologist, Tiffany & Co., The Curious Lore of Precious Stones, 1913
Kunz chaired the committee that established the modern birthstone list in 1912.
Your Birthstone by Month
January: Garnet
Garnet is one of the most varied gemstone families in the world, occurring in nearly every color, though the deep red variety is what most people picture when they hear the name. The name comes from the Latin word granatus, a reference to the pomegranate seed, which the stone resembles in both color and shape. Garnet has been used in jewelry for more than 5,000 years, found in Egyptian burial artifacts, Roman signet rings, and medieval European settings alike.
Red garnet was historically associated with safe travel, passion, and protection against injury. Today it is valued for its accessibility and durability, rating 6.5 to 7.5 on the Mohs hardness scale. That range makes it practical for most jewelry types, though it benefits from protective settings in daily-wear rings. Garnet is also one of the more affordable colored gemstones, making it a strong option across a range of metal types and price points.
February: Amethyst
Amethyst is the purple variety of quartz, ranging from pale lilac to deep violet depending on the deposit. The finest specimens come from Brazil, Uruguay, and Zambia. The name derives from the ancient Greek word amethystos, meaning not drunk, reflecting the longstanding belief that wearing amethyst or drinking from amethyst vessels would prevent intoxication. This belief made the stone popular among royalty and clergy throughout medieval Europe.
Amethyst rates 7 on the Mohs scale, making it hard enough for all jewelry types. Historically associated with clarity of mind and spiritual protection, amethyst remains one of the most widely available purple gemstones, offering good value across price points. Its cool tones pair naturally with both yellow gold and white metal settings.
Care Note
Prolonged exposure to direct sunlight can gradually fade amethyst. Store pieces you do not wear daily away from windows to keep the color saturated.
March: Aquamarine
Aquamarine belongs to the beryl mineral family, sharing that classification with emerald, though its blue-green color comes from iron rather than chromium. The name is Latin for sea water, which describes the color precisely. The most desirable specimens are a medium blue without strong green saturation. The finest aquamarines come from Brazil, particularly the Minas Gerais region, though notable deposits also exist in Pakistan, Nigeria, and Madagascar. Large, clean crystals are relatively common compared to many other colored stones, which is why high-quality aquamarine is available in larger sizes at reasonable prices.
Sailors historically considered aquamarine a talisman for safe passage, believing it calmed rough water. Today it is associated with courage, clarity, and honest communication. Aquamarine rates 7.5 to 8 on the Mohs scale and holds up well in all jewelry types, including rings worn daily. Its cool blue tones work particularly well in white gold and platinum settings. March carries a second, traditional stone in bloodstone, a dark green jasper flecked with red, though aquamarine is the primary modern choice.
April: Diamond
Diamond is the hardest natural substance on Earth, rating 10 on the Mohs scale, which makes it uniquely suited to everyday wear across all jewelry types. Its exceptional refractive index produces the brilliance and fire that define its visual appeal when cut correctly. Diamond occurs in nearly every color, but colorless and near-colorless stones dominate the jewelry market. Fancy colored diamonds, including yellow, blue, pink, and green, are natural rarities that command significant premiums over comparable colorless stones.
Diamond has been associated with invincibility and eternal love across cultures for centuries, which is the foundation of its dominance in engagement jewelry. Those born in April have a broad range of options from modest stud earrings to elaborate ring designs across metals and budgets. Lab-grown diamonds have expanded access considerably, offering the same physical, optical, and chemical properties as mined diamonds at substantially lower price points, with the same hardness and durability characteristics.
May: Emerald
Emerald is the green variety of beryl and is evaluated primarily on color. The most prized stones are a medium to medium-dark green with a slight blue saturation, often described as a true emerald green. Colombia produces the world's finest emeralds, followed by Zambia, Brazil, and Ethiopia. Unlike many gemstones, emeralds almost universally contain natural internal characteristics. A heavily included emerald is more acceptable than a comparable diamond because such inclusions are so common they have their own name: jardin, meaning garden in French.
Emerald has been associated with rebirth, fertility, wisdom, and love since ancient times. The stone rates 7.5 to 8 on the Mohs scale, but the internal inclusions can make individual stones more fragile than their hardness rating suggests. Bezel and halo settings provide more protection for daily-wear emerald rings than prong settings. Most commercial emeralds are treated with oil or resin to fill surface fractures and improve apparent clarity, a standard and accepted practice that buyers should be aware of when comparing stones.
Treatment Note
Most commercial emeralds are filled with oil or resin to reduce the visibility of surface fractures. This treatment is stable and widely accepted, but ultrasonic cleaners can strip the filling and worsen the appearance of inclusions. Clean emeralds with warm water and a soft brush only.
June: Pearl, Alexandrite, and Moonstone
June is one of three months with multiple recognized modern birthstones. Pearl is the original traditional stone and remains the most widely recognized of the three. Natural pearls form when an irritant lodges inside an oyster or mollusk, which coats it with layers of nacre over time. Cultured pearls follow the same biological process but are initiated by inserting a nucleus. Japanese Akoya pearls, Chinese freshwater pearls, and South Sea pearls from Australia and the Philippines each have distinct characteristics in size, luster, and overtone color. Pearl rates 2.5 to 4.5 on the Mohs scale and requires more careful handling than harder stones.
Alexandrite is a rare color-change variety of chrysoberyl that appears green in daylight and shifts toward red under incandescent light. Natural alexandrite from the Ural Mountains of Russia is extremely rare and expensive. Lab-created alexandrite delivers the same color-change effect at accessible prices and is widely used in commercial jewelry. Moonstone, the third June option, is a feldspar mineral prized for adularescence, an internal glow that appears to float beneath the surface as the stone moves. Moonstone rates 6 to 6.5 on the Mohs scale and should be used in protected settings to minimize contact abrasion. All three stones carry historical associations with intuition, femininity, and emotional clarity.
Care Note
Pearl and moonstone are soft and easily scratched. Keep them in a separate pouch from harder stones, and put pearl jewelry on after perfume and hairspray, not before.
July: Ruby
Ruby is the red variety of corundum, the same mineral family as sapphire. Its red color comes from traces of chromium. The most valuable rubies are a vivid medium-dark red, often described as pigeon's blood red, historically associated with the Mogok Valley of Myanmar. Vietnam, Thailand, and Mozambique also produce commercially significant rubies. At the high end, top-quality natural rubies are rarer than diamonds of comparable size, which is reflected in their price. Most rubies in the market have been heated to improve color and apparent clarity, a stable and widely accepted treatment.
Ruby has been associated with passion, courage, and vitality across cultures from ancient India, where it was called the king of gems, to medieval Europe, where it was worn as protection against misfortune. It rates 9 on the Mohs scale, making it exceptionally durable and well suited to rings and bracelets worn daily. Ruby pairs naturally with both yellow and white gold settings. Because of its strong color saturation, even small stones make a significant visual impact, which is why ruby is a practical choice across size ranges and budgets.
August: Peridot
Peridot is one of the few gemstones that forms in only one color: green. Its shade ranges from yellowish olive to vivid lime depending on the iron content of the source material. The finest peridot today comes from the San Carlos Apache Reservation in Arizona, though notable deposits also exist in Pakistan, Myanmar, and China. Unlike most colored gemstones, peridot is not typically treated, meaning the stone you purchase retains its natural color without enhancement. This makes it one of the more transparent gemstones from a consumer standpoint.
Ancient Egyptians called peridot the gem of the sun and believed it protected against night terrors and dark spirits. Some peridot crystals have been found in meteorites, making it one of the few gemstones with a confirmed extraterrestrial origin. Peridot rates 6.5 to 7 on the Mohs scale, which is sufficient for most jewelry types but warrants protective settings in daily-wear rings. August carries two additional stones: spinel, added in 2016, available in a broad range of colors and historically used as a substitute for ruby and sapphire in famous royal gems, and sardonyx, a layered reddish-brown and white stone used since antiquity for seals and carved cameos.
September: Sapphire
Sapphire is the blue variety of corundum and the most commercially significant colored gemstone globally. While blue is the most recognized color, sapphire occurs in every color except red, which is classified as ruby. The Kashmir region of India and Pakistan historically produced the most prized sapphires, with a characteristic velvety blue that remains the benchmark for the trade. Today, fine sapphires from Sri Lanka, Madagascar, and Myanmar dominate the commercial market. Like ruby, most sapphires are heat-treated to improve color and clarity, a stable treatment that is standard in the industry.
Sapphire has been associated with wisdom, loyalty, and divine favor across many cultures. Medieval clergy wore it in the belief that it represented heaven. The association with royalty and engagement persists today, most visibly through the sapphire engagement ring tradition in British royal history. Sapphire rates 9 on the Mohs scale, making it the second hardest gemstone after diamond and an excellent choice for rings worn daily without concern for surface abrasion. Blue sapphire pairs beautifully with white metals. Yellow, orange, and green sapphires pair naturally with yellow gold.
October: Opal and Tourmaline
Opal is one of the most visually complex gemstones, displaying a phenomenon called play of color, where flashes of spectral hues shift and move as the stone changes angle. Australia produces approximately 95% of the world's precious opal, with Lightning Ridge black opal and Coober Pedy white opal among the most valued varieties. Opal is a hydrated silica gel that hardened over millions of years and contains 5 to 10% water by composition. Opal rates 5.5 to 6.5 on the Mohs scale and is best suited to pendants and earrings rather than daily-wear rings.
Tourmaline is October's second modern birthstone and offers one of the broadest natural color ranges of any gemstone. Pink and green are the most common, watermelon tourmaline shows both colors in a single crystal, rubellite is the red-to-pink variety, chrome tourmaline from Tanzania is intensely green, and paraiba tourmaline from Brazil and Mozambique is a neon blue-green valued for its extraordinary saturation. Tourmaline rates 7 to 7.5 on the Mohs scale and is generally well suited to all jewelry types. The variety of color options means tourmaline can be matched to nearly any preference and budget within the same birthstone category.
Care Note
Opal contains water and can develop fine surface cracks (crazing) if it dries out or faces sudden temperature change. Keep it away from heat sources and never use an ultrasonic cleaner on it.
November: Topaz and Citrine
Blue topaz is the most commercially common variety of topaz in jewelry today, though natural blue topaz is quite rare. Most blue topaz sold commercially is colorless topaz that has been irradiated and heat-treated to produce colors ranging from sky blue to Swiss blue to deep London blue. This treatment is permanent and accepted across the trade. Imperial topaz, an orange-yellow to orange-pink variety from Brazil, is the rarest and most valuable form and has no treatment required. Topaz rates 8 on the Mohs scale, making it hard, but perfect cleavage in one direction means it can split if struck at a specific angle.
Durability Note
Topaz has perfect cleavage along one plane, meaning a sharp blow at the right angle can split the stone regardless of its hardness rating. Choose bezel or channel settings for topaz rings and remove topaz pieces before any activity involving impact.
Citrine is the yellow-to-orange variety of quartz and November's second recognized birthstone. Most commercial citrine is heat-treated amethyst or smoky quartz converted to yellow or orange through controlled heating. Natural citrine is relatively uncommon. Citrine rates 7 on the Mohs scale and is generally more durable in everyday settings than topaz because it lacks perfect cleavage. Its warm amber and golden tones pair naturally with yellow gold, and its affordability compared to other colored gemstones makes it a practical choice for larger statement pieces where size and warmth of color are the priorities.
December: Turquoise, Tanzanite, and Blue Zircon
Turquoise is the traditional December stone and one of the earliest gems used in jewelry, with examples dating back to ancient Egypt, Persia, and Pre-Columbian Americas. Its distinctive blue-green color comes from copper and aluminum phosphate. Most turquoise sold commercially is stabilized, meaning a resin has been added to harden a porous material and improve color stability. Natural high-quality turquoise from Arizona or Iran commands a significant premium over stabilized material. Turquoise rates 5 to 6 on the Mohs scale and is best suited to pendants, earrings, and ring settings that protect the stone from direct abrasion.
Tanzanite, added to the official list in 2002, is a blue-violet variety of zoisite found only in a small mining area near Mount Kilimanjaro in Tanzania. Its rarity combined with trichroism, meaning it shows different colors from different viewing angles, makes it one of the most sought-after colored gemstones of the past several decades. Tanzanite rates 6 to 7 on the Mohs scale and is not ideal for daily-wear rings without a bezel or protective setting. Blue zircon, the third December stone, is a natural zirconium silicate with dispersion rivaling diamond. Zircon and cubic zirconia are completely different materials despite the similar name.
Setting & Care Note
Tanzanite's hardness of 6 to 7 makes it vulnerable to surface scratching in rings worn without a protective setting; bezel settings are the strongest option. Tanzanite is also sensitive to ultrasonic cleaners and sudden temperature change; warm water and a soft brush are the safest cleaning method.
In Short
1Every month has a primary modern birthstone; seven months also offer traditional or additional options.
2Hardness decides where a stone belongs: harder stones suit rings, softer stones suit pendants and earrings.
3Most treatments are stable and accepted; the thing to confirm is that any treatment was disclosed.
Birthstone Quick Reference
Blue bars indicate hardness suited to daily-wear rings; amber bars mark softer stones better kept to pendants and earrings.
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Birthstone Quick Reference Card
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Email Me the Guide →When Your Month Has Multiple Birthstones
Seven months now carry multiple recognized birthstones. When a month offers two or three options, the choice is a matter of personal preference, budget, and the type of jewelry being purchased. There is no hierarchy among the options for months that list more than one stone. Modern and traditional designations indicate historical sequence rather than rank.
Budget is often the deciding factor. For June, pearl, alexandrite, and moonstone span an enormous range: freshwater pearls start at accessible price points, natural alexandrite at the high end costs more per carat than many diamonds, and moonstone sits comfortably in the mid-range. For December, turquoise is the most affordable option, tanzanite occupies the mid-to-upper range, and fine blue zircon sits in the middle.
How to Choose Birthstone Jewelry
The most important factors when selecting birthstone jewelry are gemstone durability, metal compatibility, and setting style relative to how the piece will be worn. Durability matters most for rings and bracelets, which experience more surface contact than pendants and earrings.
Metal choice affects both visual appearance and long-term durability. Yellow gold deepens the warmth of garnet, citrine, and peridot. White gold and platinum bring out the cool clarity of aquamarine, sapphire, and diamond. Rose gold adds warmth to pink and red stones including ruby, tourmaline, and garnet. Sterling silver is a practical entry point for all stone types and works particularly well for earrings, pendants, and pieces intended for occasional rather than daily wear.
The verdict: Natural and lab-created stones share the same hardness, durability, and look. Neither is "fake." Choose natural for provenance, lab-created for value, and ask for the origin in writing either way.
Birthstone Jewelry at Oath
Three Oath birthstone pieces that suit a range of months, metals, and budgets.
Birthstone jewelry connects a piece directly to its wearer in a way that few other design choices accomplish. A garnet ring is not just a red ring. A September sapphire pendant is not just a blue pendant. The month-specific association adds a layer of meaning that makes the piece identifiable with one person rather than functioning as a generic design. Every order ships free with a 30-day return policy.
Frequently Asked Questions
01
What is the difference between a modern and a traditional birthstone?
Modern birthstones come from the standardized list established in 1912 by the American National Retail Jewelers Association, updated several times since by the Jewelers of America and the American Gem Trade Association. Traditional birthstones predate that list and vary by cultural origin. For March, the modern stone is aquamarine while the traditional stone is bloodstone. Both designations are considered valid, and the choice is entirely a matter of personal preference.
02
Can I wear a birthstone that is not my own birth month?
Birthstone jewelry carries no formal rule restricting it to the wearer's own birth month. Many people wear the birthstone of a partner, child, or parent as a way of expressing connection to that person. Others choose a stone based on its color or meaning independent of any birth month association. The personal significance of the piece is determined by the wearer, not by the calendar designation.
03
Are natural birthstones better than lab-created ones?
Natural and lab-created stones share the same chemical composition, crystal structure, and physical properties. The difference is origin: natural stones form in the earth over thousands of years, while lab-created stones grow in controlled environments over weeks or months. Natural stones typically carry higher prices because of their rarity and provenance. Lab-created options are an excellent choice for buyers who prioritize optical appearance and value over origin, and they carry the same hardness, durability, and visual characteristics as their natural counterparts.
04
Which birthstone is most durable for a ring worn daily?
Diamond, sapphire, and ruby are the most durable birthstones for daily-wear rings, rating 9 to 10 on the Mohs hardness scale. Aquamarine and emerald, both rating 7.5 to 8, also perform well in rings with appropriate settings. Opal, turquoise, and moonstone rate 6 and below and are better suited to pendants and earrings where contact abrasion is less frequent. Setting style also matters: bezel and halo settings protect softer or more brittle stones better than open prong settings. The Fine Jewelry Buying Guide covers setting styles and their protective trade-offs in detail.
05
Does birthstone jewelry make a good gift for someone you do not know well?
Birthstone jewelry is one of the most reliable gift choices precisely because it requires knowing only one detail about the recipient: their birth month. That single piece of information produces a personalized result without requiring the giver to guess at style preferences, metal preferences, or design sensibilities. Stud earrings and pendants are the most universally wearable formats for gifting because they suit the broadest range of personal styles. The Jewelry Gift Guide covers additional gift formats sorted by recipient and occasion.
06
How should birthstone jewelry be cleaned and stored?
Cleaning method depends on the stone. Most birthstones rated 7 and above can be cleaned with warm water, a small amount of mild dish soap, and a soft brush, then rinsed thoroughly and patted dry. Pearl and opal should not be submerged in water or exposed to ultrasonic cleaners, as water and vibration can damage their structure. Emerald, turquoise, and treated stones should also avoid ultrasonic cleaning. Storage in individual soft pouches or compartments prevents harder stones from scratching softer ones. Avoid exposure to household chemicals including chlorine and acetone for all stone types. For a step-by-step routine, the guide to cleaning gold jewelry covers the gold settings most birthstones are set in.
