gemstone

Aquamarine cabochon ring

Aquamarine, blue variety of beryl (Be₃Al₂Si₆O₁₈)

AI-generated identification · may be incorrect

The pale blue, translucent cabochon is likely aquamarine, with vitreous luster and Mohs hardness 7.5–8; beryl crystallizes in the hexagonal system and has poor basal cleavage. The surrounding metal appears silver-colored, with decorative beadwork.

Identified August 26, 2026More gemstone →

Explore Aquamarine cabochon ring in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Aquamarine forms in lithium- and beryllium-rich granitic pegmatites and related hydrothermal cavities, commonly crystallizing during late Paleozoic to Mesozoic granite formation. The photographed stone is cut and polished, so natural crystal features are obscured.

Uses & applications

Used primarily in jewelry, especially rings, pendants, and beads; attractive transparent blue material is valued as a gemstone. Lower-grade aquamarine may be used for ornamental carvings or collected as mineral specimens.

Geological facts

Its blue color commonly comes from trace iron, and heating can intensify or modify the color. The name derives from Latin meaning “seawater.”

Field identification & locations

Aquamarine is identified by its blue-green color, glassy luster, hardness, and hexagonal crystals; distinguishing it from blue glass or pale blue topaz may require refractive-index or laboratory testing. Important sources include Brazil, Pakistan, Afghanistan, Madagascar, Nigeria, and Mozambique.