About August's Birthstone

Peridot, the birthstone for August, is a gem-quality variety of the mineral olivine. Known for its distinctive lime-green color, peridot is one of the few gemstones that occurs in only one color, though the shade may vary from yellowish-green to olive to brownish-green, depending on the iron content.

The name "peridot" is believed to come from the Arabic word "faridat," meaning gem. Throughout history, peridot has been confused with other green gemstones, including emerald and topaz. In fact, many "emeralds" in medieval European cathedral treasures have later been identified as peridots.

As the August birthstone, peridot is believed to bring good luck, peace, and success to those born in this month. It's also traditionally given as a gift for the 16th wedding anniversary, symbolizing the enduring nature of a relationship.

August Birthstone - Peridot

Peridot Properties

Physical Properties

  • Mineral: Olivine ((Mg, Fe)₂SiO₄)
  • Color: Lime to olive green
  • Hardness: 6.5-7 on Mohs scale
  • Transparency: Transparent to translucent
  • Refractive Index: 1.654-1.690
  • Crystal System: Orthorhombic
  • Specific Gravity: 3.27-3.37

Symbolic Meaning

  • Strength: Symbolizes inner strength and resilience
  • Good Fortune: Believed to bring prosperity and good luck
  • Peace: Associated with calm and restful energy
  • Protection: Historically worn as a talisman against evil spirits
  • Healing: Thought to have healing properties for the body and mind
  • Harmony: Promotes balance and positive relationships

Sources & Origins

  • Major Sources: Egypt (Zabargad Island), United States (Arizona), China
  • Other Sources: Myanmar, Pakistan, Vietnam, Tanzania
  • Historical Source: St. John's Island (Zabargad) in the Red Sea
  • Notable Mines: San Carlos Apache Reservation (Arizona)
  • Extraterrestrial Source: Found in some meteorites and on the moon
  • Formation: Typically in volcanic environments and the Earth's mantle

Care & Maintenance

  • Cleaning: Warm, soapy water and soft brush
  • Ultrasonic: Generally safe but not recommended for stones with inclusions
  • Steam Cleaning: Not recommended due to potential thermal shock
  • Chemicals: Avoid exposure to acids and harsh chemicals
  • Heat Sensitivity: Avoid sudden temperature changes
  • Storage: Store separately to prevent scratching from harder gemstones

The Rich History of Peridot

Peridot has one of the longest documented histories of any gemstone, with records of its mining dating back to 1500 BCE. The ancient Egyptians mined peridot on Zabargad Island (formerly St. John's Island) in the Red Sea, which was the primary source of the gem for over 3,500 years. The Egyptians called it the "gem of the sun" and believed it protected against nightmares and evil spirits.

In ancient times, peridot was often confused with emerald and other green gems. Cleopatra's famous emerald collection may have actually been peridot. During the Crusades, many "emeralds" were brought back to Europe, only to be later identified as peridots. Some of the "emeralds" adorning the Shrine of the Three Holy Kings in the Cologne Cathedral in Germany are actually large peridots.

In Hawaii, peridot symbolizes the tears of Pele, the goddess of fire and volcanoes. Small peridot crystals can be found on some Hawaiian beaches, formed from the volcanic lava. In the Middle Ages, peridot was used as a talisman to ward off evil spirits and to bring eloquence and happiness to the wearer.

Today, while the ancient Egyptian mines are largely depleted, peridot is mined in several locations around the world, with significant deposits found in Arizona, China, and Pakistan. The gem continues to be valued for its unique, vibrant green color and rich historical significance.

Historical Peridot Jewelry

Peridot Varieties

While peridot is unique in that it only comes in shades of green, there are several varieties and quality factors that distinguish different types of this gemstone:

Zabargad Peridot

Peridot from the historic mines on Zabargad Island (St. John's Island) in the Red Sea is highly prized for its rich olive-green color. These mines, now largely depleted, produced some of the finest peridots in history, including stones in European crown jewels.

Arizona Peridot

Peridot from the San Carlos Apache Reservation in Arizona tends to be smaller in size but can have excellent color. These stones often have a more yellowish-green hue compared to other sources and are known for their clarity.

Pakistani Peridot

Since the 1990s, the Himalayan region of Pakistan has produced some of the finest peridot available today. These stones are known for their large size and exceptional color, often displaying the most desirable rich lime-green shade.

Chinese Peridot

China has emerged as a significant source of peridot in recent years. Chinese peridot typically has a yellowish-green color and is available in a wide range of sizes, making it popular in commercial jewelry.

Meteorite Peridot

Peridot is one of the few gemstones found in meteorites. These extraterrestrial peridots, called pallasites, are extremely rare and are typically found in iron-nickel meteorites. They have the same chemical composition as Earth-formed peridot.

Cat's Eye Peridot

Rarely, peridot can display chatoyancy, or the cat's eye effect. This optical phenomenon occurs when light reflects off parallel inclusions within the stone, creating a single band of light that appears to move across the surface as the stone is rotated.

Fascinating Facts About Peridot

Space Gem

Peridot is one of the few gemstones that has been found in meteorites that have fallen to Earth, making it literally extraterrestrial. It has also been discovered in comet dust brought back from the Stardust robotic space probe.

Night Emerald

In ancient times, peridot was sometimes called "evening emerald" because its color did not darken at night and was still visible by lamplight, unlike true emeralds which can appear black in low light.

Volcanic Origins

Peridot is formed deep in the Earth's mantle and brought to the surface by volcanic activity. In Hawaii, tiny peridot crystals can sometimes be found on beaches, believed to be the tears of the volcano goddess Pele.

Ancient Egyptian Mines

The ancient Egyptians mined peridot on Zabargad Island in the Red Sea, which was shrouded in mystery and heavily guarded. Miners were forced to collect the gems during nighttime because it was said the stones were invisible in daylight but glowed at night.

Peridot in Jewelry

Peridot's vibrant green color and good durability make it a versatile gemstone for various jewelry pieces. Here are some popular ways peridot is used in jewelry:

Popular Settings

  • Rings: Peridot makes a striking center stone for rings, especially when set in yellow or white gold to enhance its green color.
  • Earrings: Peridot studs or drop earrings create a fresh, vibrant look that complements many skin tones.
  • Necklaces: Peridot pendants and beaded necklaces showcase the stone's bright color and natural brilliance.
  • Bracelets: Tennis bracelets and bangles featuring peridot offer a pop of color that works well for both casual and formal occasions.

Styling Tips

  • Peridot pairs beautifully with both yellow and white metals, though yellow gold often enhances its warm, yellowish-green tones.
  • For a complementary color scheme, combine peridot with amethyst (purple) or pink tourmaline for a striking contrast.
  • Peridot jewelry looks particularly vibrant against neutral-colored clothing, especially black, white, and navy.
  • For a modern look, consider peridot in minimalist settings that allow the stone's natural color to be the focal point.

Care Tips for Peridot Jewelry

  • Clean peridot jewelry with mild soap and warm water using a soft brush.
  • Avoid ultrasonic cleaners and steam cleaning, which can potentially damage the stone due to thermal shock.
  • Remove peridot jewelry before engaging in activities that might subject the stone to harsh chemicals or physical impact.
  • Store peridot pieces separately from harder gemstones to prevent scratching, ideally in a soft cloth or padded jewelry box.

Monthly Birthstone Chart

Looking for a quick reference to all birthstones? Check out our printable birthstone chart featuring all 12 months and their corresponding gemstones.

View Birthstone Chart
Monthly Birthstone Chart