Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)
hexagonaluncommonSilicates
Aquamarine
Be3Al2Si6O18
Aquamarine is a blue to blue-green variety of beryl, typically forming prismatic hexagonal crystals with a glassy luster. The image shows a well-formed, transparent blue crystal associated with white muscovite.
Aquamarine Physical Properties
Mohs Hardness
7.8Crystal System
hexagonalLuster
vitreousStreak Color
whiteCleavage
imperfect basal {0001}Fracture
conchoidalSpecific Gravity
2.7Colors
blue, blue-greenTransparency
transparentType Locality
Nagar (Nagir), Hunza Valley, Gilgit DistrictMineral Group
SilicatesUses
jewelry, collectorAssociated Minerals
muscovite, quartz, feldsparRarity
uncommonGeological Context
Aquamarine forms primarily in granitic pegmatites and hydrothermal veins, often found in association with other gem minerals. Its blue color is due to iron impurities within the beryl structure.
