Why this ancient ocean-linked gemstone is a favorite for modern jewelry collectors

Countries & Cities · Published 29 September 2026 Swipe more like this →

In short: Named for the Latin words for water and sea, aquamarine has captivated humanity for centuries. Beyond its legendary connection to mermaid treasure and sailor protection, this member of the beryl family offers a durable, brilliant blue aesthetic that remains a staple in jewelry and decorative arts across the globe.

Aquamarine is a transparent to translucent variety of beryl, characterized by its hexagonal crystal system and a hardness of 7.5 to 8 on the Mohs scale. Its signature blue-to-green hue is derived from trace amounts of iron within its chemical structure. While it shares a family with emeralds and morganite, aquamarine is relatively abundant, making it more accessible to collectors. Its durability makes it an excellent choice for daily wear, provided it is stored carefully to avoid scratches from other stones.

The formation of these crystals is a slow, geological process spanning millions of years, primarily occurring in granite pegmatites and hydrothermal veins. These environments are rich in volatile elements like beryllium, silicon, and aluminum, which are essential for crystal growth. Mining operations, ranging from large-scale open-pit excavations to complex underground tunneling, extract the ore before it undergoes crushing, cleaning, and sorting. Experts grade the final stones based on the four C's: color, clarity, cut, and carat weight.

Historically, the gem has held deep cultural significance. Ancient Greeks crafted intaglios, the Chinese created seals, and the Japanese fashioned netsuke from the material. Today, it is the birthstone for March and remains a global commodity found in diverse locations, including Brazil, Russia, and Australia. The largest known specimen, the Dom Pedro, weighs over 10,000 carats and was discovered in the late 1980s in Minas Gerais, Brazil, serving as a testament to the scale these crystals can reach.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?

Related

• The German word for glasses, Brille, comes from beryl, the mineral behind emeralds
• Why this royal purple gemstone was once as valuable as diamonds and rubies
• Chrysoberyl is a geological anomaly that produces the world's most elusive color-changing gemstone.
• For centuries, the bluest blue was worth more than gold.
• Why the world's most mesmerizing gemstone is technically just a pile of glass spheres
• The seven nations bordering the Arabian Gulf share a unique model of tribal dynastic rule.
• The man who fused Punjabi bhangra with Jamaican reggae into bhangragga
• The Arab world spans nineteen plurality-Arab states—or twenty-two
• How a colonial-era bank became a modern powerhouse of the Asia-Pacific financial system
• The ancient Roman palace that became the world's oldest public church
• Antigua and Barbuda packs two names into 440 square kilometres
• The heir to the Austro-Hungarian throne was a man of contradictions and violent passions.

More in Countries and other regions · More in Countries & Cities · Latest · A–Z · All topics