Aquamarine
Beryl var. Aquamarine · Precious Gemstone
Crystal System
Hexagonal system, commonly forming prismatic crystals.
Mineral Group
Silicates (Cyclosilicate subgroup)
Chemical Formula
Be3Al2Si6O18
Formation Process
Igneous and hydrothermal processes, primarily crystallizing in pegmatites and high-temperature hydrothermal veins under low pressure.
About This Crystal
Polished spherical beads showing a pale, icy blue color with translucent to semi-translucent transparency, vitreous luster, and subtle internal cloudiness or veining.
Physical Characteristics
Pale blue color, white streak, distinct hexagonal crystal form in rough state, poor basal cleavage, conchoidal to uneven fracture, specific gravity of approximately 2.67 to 2.74, brittle tenacity, and generally inert under UV light.
Optical Properties
Doubly refractive with uniaxial negative optical character, refractive indices ranging from 1.577 to 1.583, weak pleochroism showing colorless-blue to blue-green, and low dispersion.
Hardness & Durability
Origin Region
Brazil, Madagascar, Pakistan, Nigeria, and the United States; typically found in granitic pegmatites.
Hardness & Durability
Mohs hardness of 7.5 to 8, good durability and toughness, making it very suitable for everyday jewelry wear.
Care & Maintenance
Clean safely with warm soapy water and a soft brush; avoid ultrasonic or steam cleaners if inclusions are present. Store away from harder gemstones to prevent scratching.
Rarity & Value
Common to uncommon depending on color saturation and clarity; valued higher for deep blue saturation and high transparency. Heat treatment is frequently used to remove yellow or green undertones.
Special Characteristics
Displays subtle internal light scattering and translucent depth typical of natural beryl varieties.
Lore & History
Historically used as a talisman by sailors for safe voyages across the seas. Associated in modern crystal healing traditions with the throat chakra, promoting calmness, clarity, and communication.