gemstone

Rough aquamarine (likely beryl)

Beryl, Be₃Al₂Si₆O₁₈; blue color from iron impurities

AI-generated identification · may be incorrect

Pale blue-green, translucent, vitreous luster, generally hexagonal crystal structure and poor cleavage; Mohs hardness 7.5–8, specific gravity about 2.63–2.80. The specimen appears naturally fractured and unpolished, though identification from the image is not definitive.

Identified August 23, 2026More gemstone →

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Physical properties

Formation & geological history

Forms in granitic pegmatites from late-stage, water-rich magmas, commonly during Precambrian to Phanerozoic mountain-building events. It crystallizes in cavities with quartz, feldspar, and mica.

Uses & applications

Faceted aquamarine is used in jewelry; rough material is collected as a mineral specimen. Industrial beryl is a minor source of beryllium.

Geological facts

Aquamarine is the blue variety of beryl, related to emerald, morganite, and heliodor. Strong blue color and transparency generally increase value.

Field identification & locations

Look for blue-green color, glassy luster, hardness sufficient to scratch window glass, and hexagonal prismatic crystals; quartz or blue glass can resemble it. Common sources include Brazil, Pakistan, Afghanistan, Madagascar, Nigeria, and the United States.