Beryl (Emerald)

Be3Al2(SiO3)6

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A beryllium aluminum cyclosilicate with the formula Be3Al2(SiO3)6, beryl is the parent of several celebrated gemstones. Emerald owes its green to chromium, aquamarine its blue, morganite its pink, and heliodor its yellow, while goshenite is colorless. The mineral crystallizes in the hexagonal system as prismatic crystals, reaching a Mohs hardness of 7.5 to 8 with a specific gravity between 2.63 and 2.92. It is transparent and vitreous, with a colorless streak and poor basal cleavage. Emerald in particular has been among the most prized gemstones for thousands of years, its value tied to color saturation more than to clarity. A hardness of 7.5 to 8 gives the gem varieties good durability, and their value tracks color saturation more than clarity.

Beryl is a beryllium aluminum cyclosilicate with several gem varieties: emerald (green, colored by chromium), aquamarine (blue), morganite (pink), heliodor (yellow), and goshenite (colorless). Emerald has been one of the most prized gemstones for thousands of years.

Sistema Cristalino Hexagonal
Clase Mineral 09 Silicates
Dureza Mohs 7.5-8.0
Gravedad Específica 2.63-2.92
Color Green (emerald), blue (aquamarine), pink (morganite), yellow (heliodor)
Brillo Vitreous
Raya Colorless
Exfoliación Poor {0001}
Fractura Conchoidal to uneven
Transparencia Transparent
Hábito Cristalino Prismatic hexagonal

Dureza Mohs

Mohs Hardness: 7,5 – 8,0
1 Soft10 Hard
Beryl (Emerald) has a Mohs hardness of 7.5–8 on the 1–10 mineral hardness scale.
Dureza Mohs Reference Mineral
1 Talc
2 Gypsum
3 Calcite
4 Fluorite
5 Apatite
6 Orthoclase
7 Quartz
8 Topaz
9 Corundum
10 Diamond

Sistema Cristalino

Hexagonal
Beryl (Emerald) crystallizes in the Hexagonal crystal system.
Propiedad Value
Sistema Cristalino Hexagonal
Axial Relationships a = b ≠ c, α = β = 90°, γ = 120°

Frequently Asked Questions

What is the hardness of Beryl (Emerald)?
Beryl (Emerald) has a Mohs hardness of 7.5-8.0.
What crystal system does Beryl (Emerald) belong to?
Beryl (Emerald) crystallizes in the Hexagonal crystal system.
What color is Beryl (Emerald)?
Beryl (Emerald) is typically Green (emerald), blue (aquamarine), pink (morganite), yellow (heliodor).
What type of luster does Beryl (Emerald) have?
Beryl (Emerald) exhibits a Vitreous luster.
What is the chemical formula of Beryl (Emerald)?
The chemical formula of Beryl (Emerald) is Be3Al2(SiO3)6.