August Birthstone: Peridot’s Meaning, Color & History
Those born in August have one of the most cheerful gems in the world as their birthstone: the bright, sunny peridot. Glowing in shades of lime and olive green, peridot is the “gem of the sun” — and one of the few gemstones that arrives from the stars, found in both volcanic lava and meteorites. August also has two alternative stones, spinel and the traditional sardonyx, giving August babies several beautiful options. At Gems Lore, here’s your complete guide to the August birthstone: its meaning, cosmic history, color, varieties, and how to choose one as a gift.
A quick frame first: gemstone meanings come from tradition and symbolism, not science — though peridot’s story has a genuinely cosmic twist.
What Is the August Birthstone?
The modern birthstone for August is peridot, a vivid yellow-green gem. Spinel was added as a modern second birthstone (a beautiful gem available in many colors), and sardonyx is the older traditional stone. Most of this guide focuses on peridot, the primary and most popular choice, with sections on the alternatives further down.
About Peridot: The Basics
Peridot is the gem-quality variety of the mineral olivine. Unusually, its color doesn’t come from impurities (as with most gems) but from the iron that is part of its very chemistry — which is why peridot is always green, never any other color. That makes it one of the few “idiochromatic” gems, colored by their own essential makeup.
Quick facts:
- Mineral: Olivine (gem variety)
- Color: Yellow-green to olive green; the most prized is a pure, vivid grass-green
- Hardness: 6.5–7 on the Mohs scale — reasonably durable but needs some care (see our gemstone hardness chart)
- Main sources: the USA (Arizona), Pakistan, Myanmar, and China
- Good to know: it’s sensitive to acids and hard knocks, so handle with reasonable care
Peridot’s signature is its warm, slightly yellowish green — a fresh, summery color quite unlike the cooler greens of emerald or jade.
Peridot’s Cosmic History
Here’s what makes peridot truly special: it’s one of the only gemstones found beyond the earth. Peridot has been discovered in meteorites that have fallen to earth, and it forms deep in the earth’s mantle, reaching the surface through volcanic eruptions — on Hawaii, its grains famously tint some beaches green. A gem born of both fire and the stars is rare indeed.
Its earthly history is just as rich. Ancient Egyptians mined peridot on the remote Red Sea island of Zabargad (Topazios) more than 3,500 years ago, calling it the “gem of the sun” and treasuring its glow. Some historians believe a number of “emeralds” owned by Cleopatra were in fact peridots. In the Middle Ages, peridot adorned churches and was thought to ward off evil spirits and night terrors, especially when set in gold.
What the August Birthstone Means
Drawing on its sunny color and long history, peridot traditionally symbolizes:
- Positivity and light — the “gem of the sun,” associated with warmth and good cheer
- Protection — historically worn to ward off negativity, evil spirits, and bad dreams
- Abundance and prosperity — its green tied to growth and good fortune
- Renewal and strength — a stone of fresh starts and vitality
These bright, optimistic meanings make peridot a genuinely uplifting birthstone to give — a little bottled sunshine.
The Color and Quality of Peridot
With peridot, color is the key value factor. The most prized stones show a pure, vivid grass-green with as little yellow or brown as possible — a deep, lively green is rarer and more valuable than a paler or more olive tone. The finest peridot, historically from Egypt and now from places like Pakistan (the high-altitude Kashmir region), can rival emerald for richness of color.
Peridot is usually quite clean (eye-clean stones are common), so clarity is less of a concern than with included gems. One distinctive optical trait: peridot has strong “double refraction,” which can make the back facets look slightly doubled when you peer into a larger stone — a charming, identifying feature rather than a flaw. Most peridot is not treated, which is a nice rarity in the gem world — what you see is generally natural.
Spinel: August’s Modern Alternative
Spinel was added as an August birthstone relatively recently, and it’s a wonderful, underrated gem. For centuries spinel was confused with ruby and sapphire (several famous “rubies” in crown jewels are actually red spinels), but it’s now prized in its own right.
Quick spinel facts:
- Color: A rainbow of colors — red, pink, blue, purple, and more
- Hardness: 8 on the Mohs scale — durable and great for everyday wear
- Good to know: usually untreated, increasingly collectible
Spinel offers August babies a durable, brilliant alternative in almost any color they like — red spinel for those who love a ruby-like glow, or soft pinks and blues for something different.
Sardonyx: August’s Traditional Stone
The oldest August birthstone is sardonyx, a banded stone combining reddish-brown sard with white onyx (both varieties of chalcedony, in the quartz family). Used since ancient times for carved seals and cameos because of its distinct layers, sardonyx traditionally symbolizes courage, strength, and protection. It’s an affordable, historic choice for a August baby who likes earthy, banded stones.
A Famous Case of Mistaken Peridot
One of peridot’s most famous appearances is a case of mistaken identity worthy of emerald-level fame. The shrine of the Three Kings in Germany’s Cologne Cathedral is decorated with large green gems long believed to be emeralds — but they were eventually identified as peridots, some weighing around 200 carats each. It’s a wonderful reminder that for much of history, peridot’s rich green was treasured every bit as highly as emerald’s, and the two were often confused. Egypt’s ancient source island of Zabargad produced peridots so fine they fed this very confusion for centuries.
How to Spot Genuine Peridot
Because peridot is affordable and popular, a few imitations appear — so a little knowledge helps. The most common stand-in is green glass, which betrays itself with bubbles, a warm feel, and overly uniform color. Peridot is sometimes also confused with green tourmaline, green sapphire, or chrysoberyl, which are different (and often pricier) stones.
Genuine peridot has a distinctive warm, slightly yellowish green, feels cool to the touch, and — in larger stones — shows that telltale doubling of the back facets from its strong double refraction, a handy identifying feature. Since peridot is usually untreated and relatively inexpensive, outright fakes are less common than with costlier gems, but for any significant purchase, buy from a seller who identifies the stone clearly. Our how to spot fake crystals guide covers the at-home tests.
Who Is the August Birthstone For?
Beyond August birthdays, the month’s stones connect to the zodiac signs that span it: Leo (July 23 – August 22) and Virgo (August 23 – September 22). Peridot’s sunny, confident glow is often considered a fine match for the warm, sun-ruled Leo.
Peridot is also the traditional 16th wedding anniversary gemstone, making it a meaningful milestone gift — see our anniversary gemstones by year guide.
Gift Ideas for an August Birthday
August offers cheerful, affordable, and varied gift options. A few ideas:
- Peridot jewelry — a ring, pendant, or earrings; its bright green is fresh and flattering, and peridot is wonderfully affordable for its beauty.
- A spinel piece — a durable, brilliant alternative in red, pink, or blue for something a little different.
- A sardonyx cameo or cabochon — a historic, earthy choice with lovely banding.
- A raw peridot or olivine specimen — affordable and lovely for crystal lovers, paired with a note about positivity and protection.
- Pair peridot with a meaning card — note that it’s the “gem of the sun,” for light and good fortune.
For more inspiration across stones and budgets, see our crystal gifts for a birthday guide.
Caring for Peridot
Peridot needs a little more care than the hardest gems. At 6.5–7 on the Mohs scale it’s reasonably durable but can scratch and chip, and it’s sensitive to acids and sudden temperature changes. A few rules:
- Clean gently — mild soap and lukewarm water with a soft cloth; avoid ultrasonic and steam cleaners
- Keep it from acids and harsh chemicals, which can etch the surface
- Protect it from hard knocks and store it apart from harder stones
- It’s fine with brief water contact but avoid prolonged soaking and extreme temperature swings
With gentle handling, peridot keeps its sunny glow beautifully. For general guidance, see our how to cleanse crystals guide.
Frequently Asked Questions
What is the August birthstone?
The modern August birthstone is peridot, a vivid yellow-green gem. Spinel is a modern alternative (available in many colors), and sardonyx is the traditional stone. Peridot is the primary and most popular choice.
What color is the August birthstone?
Peridot is yellow-green to olive green — always green, because its color comes from its own iron content. The most prized shade is a pure, vivid grass-green.
What does the August birthstone mean?
Peridot traditionally symbolizes positivity, light, protection, abundance, and renewal. Known as the “gem of the sun,” it was historically worn to ward off negativity and bad dreams.
Is peridot found in space?
Remarkably, yes — peridot (as olivine) has been found in meteorites, and it forms deep in the earth and reaches the surface via volcanic eruptions. It’s one of the very few gems with a genuine cosmic connection.
Is peridot treated?
Usually not — peridot is one of the relatively few gems that is typically natural and untreated, so its color and clarity are generally as nature made them.
Is peridot durable enough for everyday jewelry?
It’s reasonably durable (6.5–7 on the Mohs scale) but softer than gems like sapphire, and sensitive to acids and knocks. It’s lovely for everyday wear with a little care — protective settings and gentle cleaning are wise.
What’s the difference between peridot and emerald?
Both are green, but they’re entirely different stones. Emerald is a green beryl, typically deep cool green and heavily included; peridot is a green olivine, with a warmer, more yellowish green and usually far cleaner. Emerald is rarer and pricier, while peridot offers vivid green at a much friendlier price.
Where to Go From Here
Peridot is a joyful birthstone for August — sunny, affordable, and carrying a genuinely cosmic history as a gem of fire and stars. Whether you choose glowing peridot, brilliant spinel, or historic sardonyx, August offers a stone full of light and good cheer to celebrate a late-summer birthday.
Explore every month in our birthstones by month chart, learn how gems form (including in volcanoes) in our how gemstones are formed guide, see the month before in our July birthstone guide, and discover next month’s gem in our September birthstone guide. Explore more any time here at Gems Lore.
Are you an August baby? Tell us if peridot’s green is your color in the comments.
