
mineral
Aquamarine (Tumbled)
Beryl (Be3Al2Si6O18)
Hardness: 7.5-8.0; Color: Pale greenish-blue; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: Indistinct; Specific Gravity: 2.67-2.90
- Hardness
- 7
- Color
- Pale greenish-blue
- Luster
- Vitreous (glassy)
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Physical properties
Hardness: 7.5-8.0; Color: Pale greenish-blue; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: Indistinct; Specific Gravity: 2.67-2.90
Formation & geological history
Formed in pegmatites through hydrothermal processes. Most gem-quality mineral specimens are from the Phanerozoic eon, often found in igneous environments with rich beryllium concentrations.
Uses & applications
Predominantly used as a gemstone in jewelry, as birthstone beads, and by crystal collectors for aesthetic and metaphysical purposes.
Geological facts
Aquamarine translates to 'water of the sea' in Latin. Sailors historically carried it as a talisman for protection against drowning and to ensure safe passage across oceans.
Field identification & locations
Identify by its high hardness (scratches glass/quartz) and distinctive hexagonal prism shape in raw form. Often found in Brazil, Pakistan, and Madagascar. These tumbled pieces show typical internal fractures and pale coloration.
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Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Sandstone with Mineral Veining or Crust
Sedimentary Sandstone (mostly SiO2 with Fe2O3 tinting)
sedimentary
Schist
Schist
Metamorphic
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Gypsum (variety Selenite or Alabaster)
Calcium sulfate dihydrate (CaSO4·2H2O)
Mineral
Nephrite Jade
Nephrite
Mineral/Rock