All You Need to Know About August Birthstones: Peridot, Spinel, Sardonyx

on Dec 24 2025
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    If you were born in August, you're lucky. You don't get just one birthstone; you get three beautiful options to choose from. The august birthstone collection includes peridot (a vibrant green gem), spinel (available in stunning colors from red to blue), and sardonyx (the ancient striped stone that's been cherished for over 4,000 years).

    Each of these gems tells its own story. Peridot originated from deep within Earth's core, and sometimes even from outer space. Spinel fooled royalty for centuries (yes, some famous "rubies" were actually spinels). And sardonyx? Ancient Romans carved their family symbols into it.

    Whether you're shopping for yourself, buying August birthstone jewelry as a gift, or simply curious about what connects these gems to your birth month, this guide covers everything you need to know. Let's explore what makes each august birthstone special.

    What Is Peridot? The Green August Birthstone

    Peridot is the august birthstone

    Peridot Meaning and History

    Peridot is the yellowish-green to pure green variety of the mineral olivine. This august birthstone has often confused people throughout history, as it was frequently mistaken for emerald or topaz.

    Here's an interesting fact: The Red Sea island once called Topazios (where the name "topaz" likely comes from) actually produced peridot, not topaz. Even the famous Shrine of the Three Holy Kings in Germany's Cologne Cathedral displays 200 carats of what were believed to be emeralds-but they're actually peridot.

    Some historians think Cleopatra's legendary emerald collection might have been peridot all along. The name peridot is derived from the Arabic word faridat, which translates to “gem.” Ancient priests wore peridot jewelry as early as the second century BCE. Medieval Europeans decorated their chalices and churches with it.

    People believed this gem could protect them from evil spirits and nightmares. Today, peridot is the traditional gift for a 16th wedding anniversary.

    What Color Is Peridot?

    Five color variations of peridot

    The most prized color of peridot is a pure "grass green", bright and fresh without any yellow or brown tones. The color of peridot ranges from yellowish-green to a deeper olive green. The intensity depends on how much iron is present in the crystal structure. More iron means a richer, darker green.

    Where Are August Birthstones Found? Peridot Sources

    Peridot has one of the most fascinating origin stories among gemstones.

    Most peridot seen in jewelry today comes from:

    • China
    • Myanmar (Burma)
    • Pakistan
    • Tanzania
    • Vietnam
    • United States (mainly Arizona)

    But here's what makes peridot truly special: this august birthstone forms under extreme conditions. It's created deep within Earth's mantle and brought to the surface through volcanic activity. Some peridot crystals have even arrived on meteorites from outer space.

    The Egyptian Connection

    The island of Zabargad in the Red Sea is the oldest known source of peridot. Mining might have started around 340-279 BCE. Despite producing beautiful gems, this island earned grim nicknames like "Island of Death" and "Snake Island" because of its harsh conditions. Peridot from Zabargad remains highly valuable. The finest specimens sit in prestigious museums worldwide.

    Myanmar's Mountain Treasure

    In Myanmar, loose peridot crystals can be found in the mountainous region near Mogok (a city that looks like the mythical Shangri-La). The peridot from this area has exceptional depth of color and crystal-clear transparency.

    Arizona's Volcanic Legacy

    Arizona is America's main source of this august birthstone. Thousands of years ago, massive volcanic eruptions sent lava flowing across what is now the San Carlos Apache Indian Reservation. Apache families have worked these peridot mines for generations.

    Peridot Beach, Hawaii

    There's a beach in Hawaii where the sand actually shimmers green. That's because it contains tiny peridot crystals mixed with volcanic minerals.

    Peridot from Space

    Some peridot has literally traveled through space. Pallasite meteorites (made of nickel-iron and olivine) have crashed into Earth carrying gem-quality peridot. While thousands of meteorites hit our planet, only a few contain peridot beautiful enough for jewelry.

    Peridot Care and Cleaning

    Peridot ranks 6.5 to 7 on the Mohs hardness scale. This makes it softer than many popular gemstones.

    Important care tips:

    • Avoid wearing peridot rings daily. The stone can get scratched or chipped with regular hard wear.
    • Keep peridot away from acids, including acidic perspiration during long-term wear.
    • Never use steam cleaners or ultrasonic cleaners. Peridot is vulnerable to thermal shock (sudden temperature changes).
    • Clean gently with warm water, mild dish soap, and a soft-bristle brush.
    • Store peridot separately to prevent harder gems from scratching it.

    What Is Spinel? The Underappreciated August Birthstone

    August Birthstone, Spinel

    Spinel Meaning and History

    The name "spinel" is derived from the Latin word spina, meaning thorn. This refers to the pointed shape of natural spinel crystals. For centuries, spinel lived in ruby's shadow. Some of history's most famous "rubies" turned out to be this august birthstone instead.

    The Black Prince's "Ruby"

    A 170-carat red spinel called the Black Prince's "Ruby." This gem passed through Moorish and Spanish kings before Edward, Prince of Wales (the Black Prince) received it in 1367 as payment for winning a battle. It wasn't until the 18th century that scientists separated spinel from ruby based on their different chemical compositions.

    Today, this historic red spinel sits in Great Britain's Imperial State Crown, displayed in the Tower of London above the massive 317-carat Cullinan II diamond.

    Ancient Beliefs About Spinel

    Red spinel and other red gemstones were thought to treat blood loss and reduce inflammation. People believed red gems could calm anger and create harmony. This august birthstone is traditionally given for 22nd wedding anniversaries.

    What Colors Does Spinel Come In?

    Color variations of spinel

    Here's what makes spinel exciting: this semi-precious stone comes in an incredible range of colors. Spinel color options include:

    • Intense red (the most prized)
    • Hot pink
    • Vibrant orange
    • Purple and violet
    • Blue and bluish-green

    Unlike many gemstones that need treatment to enhance their color, spinel's colors are completely natural.

    Where Is Spinel Found?

    Today's major spinel sources include:

    • Myanmar (Burma) - known for hot pink and red spinel
    • Sri Lanka produces blue, pink, and purple varieties
    • Vietnam - yields deep red, purple, and vivid blue spinel
    • Tanzania - discovered in 2007, produces pink and orangy-red stones
    • Tajikistan and Pakistan

    Myanmar's "Spirit Polished" Gems

    Myanmar's Mogok Stone Tract produces some of the world's finest spinel. Gems from this region are so naturally lustrous that locals say they're "spirit polished." Both spinel and peridot are found in this legendary mining area.

    Sri Lanka's Treasure Island

    Sri Lanka produces an incredible variety of gems: sapphire, ruby, garnet, and spinel. The rolling hills of the Central Highlands and river gravels in the Ratnapura District have been rich spinel sources for centuries.

    Vietnam's Remote Mines

    The Luc Yen region in northern Vietnam has produced exceptional spinel since the 1980s. Vivid blue spinels were discovered there in the 2000s. Reaching these mines requires a five to six-hour drive from Hanoi, followed by several more hours of hiking or biking.

    Tanzania's Recent Discovery

    In 2007, Tanzania surprised the gem world with a new find of pinkish and orangy-red spinel that captivated collectors. Mines there also produce purple and blue varieties.

    Spinel Care and Cleaning

    Spinel ranks 8 on the Mohs hardness scale. This makes it quite durable for everyday jewelry, including rings.

    Care guidelines:

    • Ultrasonic and steam cleaners can generally be used safely.
    • If your spinel has visible fractures, avoid harsh cleaning methods.
    • Warm, soapy water is always the safest cleaning option.
    • Spinel is stable in the light and to most chemicals.
    • Very high heat can fade some colors, so remove spinel jewelry before welding or torch work.

    What Is Sardonyx? The Original August Birthstone

    August Birthstone, Sardonyx

    Sardonyx Meaning and History

    Sardonyx is the oldest of the three august birthstones, with a history spanning more than 4,000 years. This stone is actually a combination of two types of chalcedony (a form of quartz): sard and onyx. You'll see bands of brownish-red to dark orange sard alternating with white or black onyx layers.

    Roman Signet Rings

    Ancient Romans loved sardonyx for their seals and signet rings. Hot wax wouldn't stick to it, making it perfect for stamping official documents. The contrasting colored bands also made sardonyx ideal for carving detailed cameos and intaglios.

    Biblical and Spiritual Significance

    Sardonyx is believed to be one of the stones in the High Priest's breastplate mentioned in the Old Testament. It represents the strength of spiritual life. Roman soldiers wore sardonyx rings carved with Mars (the god of war) for protection in battle.

    Modern Meanings

    Today, this august birthstone is associated with:

    • Courage and strength
    • Happiness and clear communication
    • Stability in marriage and partnerships

    Where Is Sardonyx Found?

    Sardonyx is found in many locations worldwide:

    • India (known for the strong contrast between colored layers)
    • Brazil
    • Germany
    • Czech Republic
    • Madagascar
    • Uruguay
    • United States

    India produces some of the finest sardonyx with sharp, well-defined banding.

    Sardonyx Care and Cleaning

    Sardonyx ranks 6.5 to 7 on the Mohs hardness scale, the same as peridot.

    Important care notes:

    • Be careful wearing sardonyx rings with frequent wear. The stone can scratch.
    • Many sardonyx stones are dyed to enhance their color.
    • High heat (during jewelry repair, for example) might affect dyed stones.
    • Use ultrasonic and steam cleaners with caution.
    • The safest cleaning method is warm, soapy water with a soft-bristle brush.

    Benefits of August Birthstones: Why Wear Them?

    Beyond their beauty, people have valued these gems for their believed metaphysical properties.

    Peridot is thought to:

    • Protect against nightmares and evil spirits
    • Bring good fortune and peace
    • Strengthen relationships and reduce anger
    • Promote emotional balance

    Spinel is believed to:

    • Calm anger and promote harmony
    • Revitalize energy
    • Encourage passion and devotion
    • Protect the wearer from harm

    Sardonyx is associated with:

    • Courage and self-confidence
    • Happy marriages and partnerships
    • Clear communication
    • Protection in challenging situations

    While these beliefs aren't scientifically proven, many people find personal meaning in wearing their birthstone.

    Zodiac Connection: August Birthstones for Leo and Virgo

    August spans two zodiac signs:

    • Leo (July 23 - August 22): Peridot's vibrant green energy matches Leo's bold, confident nature.

    • Virgo (August 23 - September 22): Spinel's range of colors and sardonyx's grounding properties complement Virgo's practical, detail-oriented personality.

    Where to Wear August Birthstone Jewelry

    Peridot works best in:

    • Pendants and necklaces (protected from daily wear)
    • Earrings
    • Special occasion rings
    • Brooches

    Spinel is ideal for:

    • Engagement rings (durable enough for daily wear)
    • All types of everyday jewelry
    • Statement rings
    • Any jewelry piece, its hardness makes it versatile

    Sardonyx looks beautiful in:

    • Cameos and carved jewelry
    • Men's signet rings
    • Pendants
    • Occasional-wear rings

    Choosing Your Perfect August Birthstone Jewelry

    Now that you understand what makes each august birthstone special, here's how to choose:

    Pick peridot if you love:

    • Fresh, vibrant green colors
    • Gems with a cosmic origin story
    • Unique, eye-catching jewelry

    Choose spinel if you want:

    • Vibrant colors beyond green
    • A durable gem for everyday wear
    • An alternative to more expensive rubies or sapphires

    Select sardonyx if you appreciate:

    • Historical significance
    • Natural patterns and earth tones
    • Carved or vintage-style jewelry

    Overall

    August birthstones give you three distinct choices, each with its own character and charm. Peridot brings cosmic green energy from Earth's depths and beyond. Spinel offers a rainbow of colors with royal history. Sardonyx carries ancient wisdom in its striped bands. Whether you're drawn to peridot's fresh glow, spinel's vibrant hues, or sardonyx's earthy elegance, your august birthstone connects you to centuries of meaning and beauty.

    Frequently Asked Questions About August Birthstones

    What is the birthstone in August?

    August has three birthstones: peridot (green), spinel (available in many colors), and sardonyx (banded stone). Peridot is the most popular, known for its vibrant olive-green color. Spinel comes in red, pink, blue, and purple. Sardonyx features alternating bands of brownish-red and white or black.

    What is the birthstone color for the month of August?

    The primary August birthstone color is green from peridot. However, august birthstones actually span a full color spectrum. Spinel ranges from red to pink, orange, purple, and blue. Sardonyx displays earth tones with bands of brown, orange, white, and black. This gives August-born people many color options to match their personal style.

    Can I wear my August birthstone every day?

    Spinel is the best August birthstone for daily wear because it ranks 8 on the Mohs hardness scale. It's durable enough for engagement rings and everyday jewelry. Peridot and sardonyx (both 6.5-7 hardness) are softer and work better for occasional wear or protected settings like pendants and earrings rather than rings worn daily.

    Where should I wear august birthstone jewelry?

    Wear spinel in any jewelry piece, including rings, as it's durable. Peridot works best in necklaces, earrings, and pendants where it's protected from bumps and scratches. Sardonyx looks beautiful in carved pieces, signet rings for occasional wear, and pendants. Choose your setting based on how often you'll wear the piece.

    What are the benefits of wearing August birthstones?

    People believe peridot brings emotional balance and protects against nightmares. Spinel is thought to calm anger and revitalize energy. Sardonyx is associated with courage, clear communication, and relationship stability. While these metaphysical properties aren't scientifically proven, many people find personal meaning and connection by wearing their birthstone as jewelry.

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