Aquamarine

Aquamarine — Latin for water of the sea — has been the talisman of sailors for over 2,000 years. Roman naval crews carried small aquamarines to ensure safe passage and calm waves. The Greeks and Romans engraved tiny aquamarine intaglios with the image of Poseidon (Neptune to the Romans) for protection at sea. The largest cut aquamarine in history is the Dom Pedro, a 4.5-pound (10,363-carat) Brazilian piece sculpted by Bernd Munsteiner in the 1990s, now displayed at the Smithsonian. Aquamarine belongs to the beryl family (along with emerald, morganite, and heliodor) — the same crystalline structure colored differently by trace impurities. The most valuable aquamarines come from Brazil's Minas Gerais state, with secondary sources in Madagascar, Pakistan, and Russia.

Aquamarine represents calm communication, emotional clarity, and the courage that comes from knowing yourself. The pale blue color was associated by Greeks with Aphrodite when she was born from the foam of the sea. Renaissance Europeans believed aquamarine was the source of the Holy Grail's healing power. In Hindu astrology, aquamarine is recommended for those needing softer communication and emotional regulation. Modern brides sometimes choose aquamarine engagement rings as alternatives to diamond — symbolizing a love that flows like water rather than locks like stone. The gem is associated with the throat chakra and with finding the right words.

The Dom Pedro Aquamarine — sculpted from a 4.5-pound rough crystal — is the world's largest cut aquamarine, displayed at the Smithsonian since 2012. The Hirsch Aquamarine, a 109.92-carat brilliant cut, sold at Christie's in 2011. Eleanor Roosevelt's aquamarine necklace (gift from the President of Brazil during a state visit) has been on display at the Roosevelt Library in Hyde Park. The Espirito Santo Aquamarine, a 2,680-carat Brazilian crystal, is also displayed at the American Museum of Natural History.

Aquamarine is durable (Mohs 7.5-8) and suitable for daily wear. Heat treatment is common (changing greenish-yellow stones to pure blue) and accepted in the trade. Aquamarine is more stable than blue topaz under UV exposure. Clean with warm water and mild soap; ultrasonic cleaners are generally safe but should be avoided for fracture-filled or oiled stones. Store separately from harder gems (sapphire, ruby) to prevent scratching.